选型 | 安防人必读：摄像机焦距怎么选？
<section style="font-size: 15px;color: rgb(113, 112, 113);letter-spacing: 1.2px;line-height: 1.9;box-sizing: border-box;font-style: normal;font-weight: 400;text-align: justify;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">你是否也有下面的困扰：</p><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">想要看清人脸和车牌</p><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">该选择焦距多少毫米的镜头？</p><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">4mm、6mm、8mm焦距的镜头分别适合哪些场景？</p><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">哪些方面会影响摄像机的视野范围和监控距离？</p><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">接下来让我门一起来揭开焦距、镜头、视场角、物距和监控距离间的神秘面纱~</p><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">摆脱镜头选项的困扰吧。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="display: flex;flex-flow: row nowrap;margin: 10px 0%;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 40 40 0%;align-self: flex-start;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(159, 168, 218);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;align-self: flex-start;height: auto;background-color: rgb(159, 168, 218);border-width: 0px;border-radius: 0px 26px;border-style: none;border-color: rgb(62, 62, 62);padding: 5px 15px;overflow: hidden;box-sizing: border-box;"><section style="color: rgb(255, 255, 255);text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">场景一</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 40 40 0%;align-self: flex-end;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(159, 168, 218);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin: 10px 0%;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;line-height: 0;letter-spacing: 0px;height: auto;box-sizing: border-box;"><section style="text-align: right;margin: 0px 0% -1px;transform: translate3d(6px, 0px, 0px);-webkit-transform: translate3d(6px, 0px, 0px);-moz-transform: translate3d(6px, 0px, 0px);-o-transform: translate3d(6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/a60f9d6e-6162-492b-a9f7-345eb80e44e3.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;background-image: linear-gradient(90deg, rgb(255, 228, 100) 0%, rgb(255, 209, 26) 100%);border-width: 0px;border-radius: 10px 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(124, 92, 0);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">我想要一个摄像机看的又远，同时照的范围又宽，这个能实现吗？</p></section></section></section></section></section></section></section><section style="margin: 10px 0%;text-align: right;justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;padding: 0px 5px 0px 0px;align-self: flex-start;box-sizing: border-box;"><section style="justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-end;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;border-width: 0px;border-radius: 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;background-color: rgb(222, 240, 255);box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(55, 55, 74);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">可以的呀，了解一下我们的全局摄像机和双舱摄像机~</p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;height: auto;line-height: 0;letter-spacing: 0px;box-sizing: border-box;"><section style="text-align: left;margin: 0px 0% -1px;transform: translate3d(-6px, 0px, 0px);-webkit-transform: translate3d(-6px, 0px, 0px);-moz-transform: translate3d(-6px, 0px, 0px);-o-transform: translate3d(-6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/00b4d17b-17bd-4b33-9b09-788ea2ef6e94.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section></section></section></section></section></section><section style="margin: 10px 0%;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;line-height: 0;letter-spacing: 0px;height: auto;box-sizing: border-box;"><section style="text-align: right;margin: 0px 0% -1px;transform: translate3d(6px, 0px, 0px);-webkit-transform: translate3d(6px, 0px, 0px);-moz-transform: translate3d(6px, 0px, 0px);-o-transform: translate3d(6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/a60f9d6e-6162-492b-a9f7-345eb80e44e3.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;background-image: linear-gradient(90deg, rgb(255, 228, 100) 0%, rgb(255, 209, 26) 100%);border-width: 0px;border-radius: 10px 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(124, 92, 0);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">可我就想要一个普通的单镜头网络摄像机，能否实现看的又远，同时照的范围又宽，可以实现吗？</p></section></section></section></section></section></section></section><section style="margin: 10px 0%;text-align: right;justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;padding: 0px 5px 0px 0px;align-self: flex-start;box-sizing: border-box;"><section style="justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-end;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;border-width: 0px;border-radius: 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;background-color: rgb(222, 240, 255);box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(55, 55, 74);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">这种是不行的哦，接下来让我们一起来了解下焦距、视场角与监控距离间的美妙关系吧。</p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;height: auto;line-height: 0;letter-spacing: 0px;box-sizing: border-box;"><section style="text-align: left;margin: 0px 0% -1px;transform: translate3d(-6px, 0px, 0px);-webkit-transform: translate3d(-6px, 0px, 0px);-moz-transform: translate3d(-6px, 0px, 0px);-o-transform: translate3d(-6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/00b4d17b-17bd-4b33-9b09-788ea2ef6e94.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section></section></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="color: rgb(113, 112, 113);box-sizing: border-box;" powered-by="xiumi.us"><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">一个镜头从物理的角度来讲，焦距和视场角是一一对应的，<span style="color: rgb(215, 0, 15);box-sizing: border-box;"><strong style="box-sizing: border-box;">一个确定的焦距就意味着一个确定的视场角。</strong></span></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 18px;color: rgb(113, 112, 113);box-sizing: border-box;">焦距</span></strong><span style="color: rgb(113, 112, 113);box-sizing: border-box;">数</span>值<span style="color: rgb(215, 0, 15);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 18px;box-sizing: border-box;">越小</span></strong></span>，<span style="font-size: 18px;color: rgb(113, 112, 113);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="box-sizing: border-box;">视场角</span></strong></span><span style="color: rgb(215, 0, 15);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 18px;box-sizing: border-box;">越大</span></strong></span>，所观察的<span style="font-size: 18px;box-sizing: border-box;"><strong style="box-sizing: border-box;">范围</strong></span>也<strong style="box-sizing: border-box;"><span style="color: rgb(215, 0, 15);font-size: 18px;box-sizing: border-box;">越大</span></strong>，但距离远的物体会分辨的不是很清楚；</p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><span style="font-size: 18px;box-sizing: border-box;"><strong style="box-sizing: border-box;">焦距</strong></span>数值<strong style="box-sizing: border-box;"><span style="color: rgb(215, 0, 15);font-size: 18px;box-sizing: border-box;">越大</span></strong>，<strong style="box-sizing: border-box;"><span style="font-size: 18px;box-sizing: border-box;">视场角</span></strong><strong style="box-sizing: border-box;"><span style="font-size: 18px;color: rgb(215, 0, 15);box-sizing: border-box;">越小</span></strong>，所观察的<strong style="box-sizing: border-box;"><span style="font-size: 18px;box-sizing: border-box;">范围</span></strong>也<span style="font-size: 18px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(215, 0, 15);box-sizing: border-box;">越小</span></strong></span>，只要焦距选择合适，即便距离很远的物体也可以看得清清楚楚。</p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;border-width: 0px;border-radius: 5px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;overflow: hidden;box-sizing: border-box;"></section></section><section style="text-align: center;font-size: 12px;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin: 0px;padding: 0px;box-sizing: border-box;">焦距与视场角的关系</p></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;margin: 0px 0% 10px;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 95%;vertical-align: top;border-style: solid;border-width: 0px;border-radius: 5px;border-color: rgb(62, 62, 62);background-position: 0% -201.538%;background-repeat: repeat;background-size: 52.322%;background-attachment: scroll;align-self: flex-start;flex: 0 0 auto;background-image: url("https://mmbiz.qpic.cn/mmbiz_gif/p8CaKzvQibq41NhywNlGhZriaBzw9edscg2nPSH10MzOtMnCZXuHcNibMFogJ6OhsMJ177B7xxBkBqiaJuzRy8NDJQ/640?wx_fmt=gif");box-sizing: border-box;"><section style="margin: -15px 0% 15px;transform: translate3d(15px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="padding: 10px;width: 100%;border-width: 1px;border-style: solid;border-color: rgb(62, 62, 62);box-shadow: rgb(204, 204, 204) 0px 0px 0px;background-color: rgb(255, 255, 255);margin-top: -2px;border-radius: 5px;box-sizing: border-box;"><section style="margin: -35px 6% 10px 0%;text-align: right;transform: translate3d(-20px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: 0px;box-sizing: border-box;"><section style="width: 0px;border-bottom: 24px solid rgb(62, 62, 62);box-sizing: border-box;border-left: 11px solid transparent !important;border-right: 11px solid transparent !important;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section><section style="width: 0px;margin: -21px 1px 0px;border-bottom: 22px solid rgb(255, 255, 255);box-sizing: border-box;border-left: 10px solid transparent !important;border-right: 10px solid transparent !important;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(215, 0, 15);box-sizing: border-box;">注意：</span></strong>每个设备的参数会有所差异，事例中设备的监控距离和视场角度不是统一值，仅供参考，具体以官网设备参数为准。</p></section></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;border-width: 0px;border-radius: 5px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;overflow: hidden;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin: 0px;padding: 0px;box-sizing: border-box;">相同的监控距离，不同焦距下，设备成像效果图</p></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us">综上所述，一个镜头想看的远又宽这个是无法实现的。且在选择镜头焦距时，应该充分考虑是观测细节重要，还是有一个大的观测范围重要，如果要<span style="font-size: 18px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(215, 0, 15);box-sizing: border-box;">看细节</span></strong></span>，就选择<span style="font-size: 18px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(215, 0, 15);box-sizing: border-box;">长焦距镜头</span></strong></span>；如果看近距离大范围的场面，就可选择小焦距的广角镜头。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="padding-top: 1.1em;box-sizing: border-box;"><section style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section style="border-radius: 0px 0.5em 0.5em 0px;background-color: rgb(249, 110, 87);padding: 0.2em 0.4em;color: rgb(255, 255, 255);box-sizing: border-box;"><section style="box-sizing: border-box;">小贴士</section></section><section style="width: 0px;border-right: 4px solid rgb(249, 110, 87);border-top: 4px solid rgb(249, 110, 87);box-sizing: border-box;border-left: 4px solid transparent !important;border-bottom: 4px solid transparent !important;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section><section style="display: inline-block;vertical-align: top;padding-left: 10px;color: rgb(113, 112, 113);font-size: 17px;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">如何选镜头</strong></p></section><section style="border-color: rgb(204, 204, 204);border-width: 1px;border-style: solid;padding: 3.5em 10px 10px;margin-left: 8px;margin-top: -3.5em;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">✔小视距、大视场角的场所，例如电梯、房间等，一般用2.8-4mm镜头。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">✔景深大、视角范围广的场所，例如室外环境、围墙等，一般用6-8mm镜头。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">✔视角较小、距离较远的场所，例如车间、仓库等，常用6-12mm镜头。</p></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="display: flex;flex-flow: row nowrap;margin: 10px 0%;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 40 40 0%;align-self: flex-start;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(159, 168, 218);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;align-self: flex-start;height: auto;background-color: rgb(159, 168, 218);border-width: 0px;border-radius: 0px 26px;border-style: none;border-color: rgb(62, 62, 62);padding: 5px 15px;overflow: hidden;box-sizing: border-box;"><section style="color: rgb(255, 255, 255);text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">场景二</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 40 40 0%;align-self: flex-end;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(159, 168, 218);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin: 10px 0%;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;line-height: 0;letter-spacing: 0px;height: auto;box-sizing: border-box;"><section style="text-align: right;margin: 0px 0% -1px;transform: translate3d(6px, 0px, 0px);-webkit-transform: translate3d(6px, 0px, 0px);-moz-transform: translate3d(6px, 0px, 0px);-o-transform: translate3d(6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/a60f9d6e-6162-492b-a9f7-345eb80e44e3.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;background-image: linear-gradient(90deg, rgb(255, 228, 100) 0%, rgb(255, 209, 26) 100%);border-width: 0px;border-radius: 10px 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(124, 92, 0);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">好不容易选好了摄像头型号，发现镜头还有多种焦距可选，2.8mm、4mm、6mm、8mm，那么我到底要选择哪个焦距用在我当前的场景下会比较合适呢？</p></section></section></section></section></section></section></section><section style="margin: 10px 0%;text-align: right;justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;padding: 0px 5px 0px 0px;align-self: flex-start;box-sizing: border-box;"><section style="justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-end;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;border-width: 0px;border-radius: 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;background-color: rgb(222, 240, 255);box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(55, 55, 74);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">我们常用的方法就是估算法，比较方便快捷选型。一般我们可以通过两个方面进行估算。</p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;height: auto;line-height: 0;letter-spacing: 0px;box-sizing: border-box;"><section style="text-align: left;margin: 0px 0% -1px;transform: translate3d(-6px, 0px, 0px);-webkit-transform: translate3d(-6px, 0px, 0px);-moz-transform: translate3d(-6px, 0px, 0px);-o-transform: translate3d(-6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/00b4d17b-17bd-4b33-9b09-788ea2ef6e94.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section></section></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="display: flex;flex-flow: row nowrap;margin: 10px 0%;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: stretch;padding: 0px 5px 0px 0px;border-width: 0px;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;text-align: center;justify-content: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 auto;align-self: flex-start;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(159, 168, 218);border-width: 2px;border-radius: 10px 0px;border-style: none;border-color: rgb(159, 168, 218);padding: 5px 8px;box-shadow: rgba(255, 255, 255, 0) 0px 0px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(255, 255, 255);text-align: left;letter-spacing: 0px;line-height: 1.8;padding: 0px;text-shadow: rgb(92, 107, 192) 1px -1px, rgb(92, 107, 192) 1px 1px, rgb(92, 107, 192) -1px 1px, rgb(92, 107, 192) -1px -1px, rgb(92, 107, 192) 1px 0px, rgb(92, 107, 192) 0px 1px, rgb(92, 107, 192) -1px 0px, rgb(92, 107, 192) 0px -1px;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">01</strong></p></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;align-self: stretch;height: auto;background-color: rgb(159, 168, 218);border-width: 2px;border-radius: 0px 15px;border-style: none;border-color: rgb(159, 168, 218);padding: 0px 10px;box-sizing: border-box;"><section style="margin: 5px 0% 0px;text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(255, 255, 255);letter-spacing: 4px;line-height: 1.8;padding: 0px;text-shadow: rgb(92, 107, 192) 1px -1px, rgb(92, 107, 192) 1px 1px, rgb(92, 107, 192) -1px 1px, rgb(92, 107, 192) -1px -1px, rgb(92, 107, 192) 1px 0px, rgb(92, 107, 192) 0px 1px, rgb(92, 107, 192) -1px 0px, rgb(92, 107, 192) 0px -1px;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">不同焦距，监控距离的估算</strong></p></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us">4mm（含）以上的镜头，监测距离大致可以按照下面表格进行估算。</p><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><span style="font-size: 12px;box-sizing: border-box;">（表格中2MP/3MP表示的是像素200万/300万）</span></p><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">例如：200W的摄像头，4mm的镜头，可以看清1.5*4=6米处的人脸或者车牌，3*4=12米处的人体轮廓，6*4=24米处的人物活动信息。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(215, 0, 15);box-sizing: border-box;">注意：</span></strong>监控使用的环境、光线、安装角度等众多因素，会对监控视野产生影响，此表的参数仅供参考，实际监测距离以实测为准。</p></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="display: flex;flex-flow: row nowrap;margin: 10px 0%;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: stretch;padding: 0px 5px 0px 0px;border-width: 0px;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;text-align: center;justify-content: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 auto;align-self: flex-start;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(159, 168, 218);border-width: 2px;border-radius: 10px 0px;border-style: none;border-color: rgb(159, 168, 218);padding: 5px 8px;box-shadow: rgba(255, 255, 255, 0) 0px 0px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(255, 255, 255);text-align: left;letter-spacing: 0px;line-height: 1.8;padding: 0px;text-shadow: rgb(92, 107, 192) 1px -1px, rgb(92, 107, 192) 1px 1px, rgb(92, 107, 192) -1px 1px, rgb(92, 107, 192) -1px -1px, rgb(92, 107, 192) 1px 0px, rgb(92, 107, 192) 0px 1px, rgb(92, 107, 192) -1px 0px, rgb(92, 107, 192) 0px -1px;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">02</strong></p></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;align-self: stretch;height: auto;background-color: rgb(159, 168, 218);border-width: 2px;border-radius: 0px 15px;border-style: none;border-color: rgb(159, 168, 218);padding: 0px 10px;box-sizing: border-box;"><section style="margin: 5px 0% 0px;text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(255, 255, 255);letter-spacing: 4px;line-height: 1.8;padding: 0px;text-shadow: rgb(92, 107, 192) 1px -1px, rgb(92, 107, 192) 1px 1px, rgb(92, 107, 192) -1px 1px, rgb(92, 107, 192) -1px -1px, rgb(92, 107, 192) 1px 0px, rgb(92, 107, 192) 0px 1px, rgb(92, 107, 192) -1px 0px, rgb(92, 107, 192) 0px -1px;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">固定的焦距下，监控范围的估算</strong></p></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us">摄像头能够照射多宽的场景，利用三角函数公式，结合视场角，大致就可以估算出来。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin-top: 10px;margin-bottom: 10px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 100%;box-sizing: border-box;"><section style="width: 2.5em;height: 2.5em;margin-bottom: -2.5em;border-left: 2px dotted rgb(193, 193, 193);border-top: 2px dotted rgb(193, 193, 193);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section><section style="padding: 8px;box-sizing: border-box;"><section style="width: 100%;background-color: rgba(255, 255, 255, 0);box-sizing: border-box;"><section style="justify-content: center;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 50%;padding: 0px 5px 0px 0px;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"></section></section></section><section style="display: inline-block;vertical-align: top;width: 50%;padding: 0px 0px 0px 5px;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section></section></section></section></section><section style="width: 2.5em;height: 2.5em;float: right;margin-top: -2.5em;border-right: 2px dotted rgb(193, 193, 193);border-bottom: 2px dotted rgb(193, 193, 193);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">摄像头的视野剖面为一个等腰三角形，三角形顶角为摄像头视场角，三角形高为监控距离，底边为视野宽度。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">以DS-2CD3T26FWDA3-IS这款设备为例，4mm镜头，其水平视场角为81.9°。</p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(113, 112, 113) 0px 0px 3px;box-sizing: border-box;"></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="text-indent: 2em;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us">按照三角函数公式计算，顶角一半为40.95°，tan40.95°=底边一半/监控距离，结合前面监控距离的估算，如果以看清人体活动距离来算，监控距离16米，算下来整个底边的值就等于（2Xtan40.95°X16）≈27.8米。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="display: flex;flex-flow: row nowrap;margin: 10px 0%;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 40 40 0%;align-self: flex-start;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(159, 168, 218);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;align-self: flex-start;height: auto;background-color: rgb(159, 168, 218);border-width: 0px;border-radius: 0px 26px;border-style: none;border-color: rgb(62, 62, 62);padding: 5px 15px;overflow: hidden;box-sizing: border-box;"><section style="color: rgb(255, 255, 255);text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">场景三</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;flex: 40 40 0%;align-self: flex-end;height: auto;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(159, 168, 218);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin: 10px 0%;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;line-height: 0;letter-spacing: 0px;height: auto;box-sizing: border-box;"><section style="text-align: right;margin: 0px 0% -1px;transform: translate3d(6px, 0px, 0px);-webkit-transform: translate3d(6px, 0px, 0px);-moz-transform: translate3d(6px, 0px, 0px);-o-transform: translate3d(6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/a60f9d6e-6162-492b-a9f7-345eb80e44e3.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;background-image: linear-gradient(90deg, rgb(255, 228, 100) 0%, rgb(255, 209, 26) 100%);border-width: 0px;border-radius: 10px 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(254, 188, 0) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(124, 92, 0);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">可变倍的相机的倍率经常说是4倍，20倍，23倍……，这个是啥意思啊？</p></section></section></section></section></section></section></section><section style="margin: 10px 0%;text-align: right;justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 75%;vertical-align: top;box-shadow: rgb(0, 0, 0) 0px 0px 0px;flex: 0 0 auto;height: auto;padding: 0px 5px 0px 0px;align-self: flex-start;box-sizing: border-box;"><section style="justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;min-width: 10%;max-width: 100%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;justify-content: flex-end;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: auto;border-width: 0px;border-radius: 10px 10px 0px;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) -3px -3px 0px inset;padding: 5px 10px;flex: 100 100 0%;align-self: flex-end;height: auto;background-color: rgb(222, 240, 255);box-sizing: border-box;"><section style="display: flex;flex-flow: row nowrap;text-align: left;justify-content: flex-start;margin: 0px 0%;opacity: 0.66;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: auto;vertical-align: top;flex: 0 0 0%;height: auto;line-height: 0;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 50px;height: 6px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/8f1b0a57-54bf-40d5-8a67-71cbb208586a.png" ></section></section></section></section></section></section><section style="color: rgb(55, 55, 74);letter-spacing: 1px;padding: 0px;font-size: 13px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">在这我们也同样以举例的方式，我们一起来了解下吧！</p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;box-shadow: rgb(0, 0, 0) 0px 0px 0px;height: auto;line-height: 0;letter-spacing: 0px;box-sizing: border-box;"><section style="text-align: left;margin: 0px 0% -1px;transform: translate3d(-6px, 0px, 0px);-webkit-transform: translate3d(-6px, 0px, 0px);-moz-transform: translate3d(-6px, 0px, 0px);-o-transform: translate3d(-6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 18px;height: 13px;vertical-align: top;overflow: hidden;line-height: 0;letter-spacing: 0px;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/00b4d17b-17bd-4b33-9b09-788ea2ef6e94.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 0 0 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 40px;height: 40px;vertical-align: top;overflow: hidden;border-width: 0px;border-radius: 50%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(180, 221, 255) 2px 3px 0px;box-sizing: border-box;"><section style="margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 0%;border-style: none;border-color: rgb(62, 62, 62);box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section></section></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us">我们以<span style="letter-spacing: 1.2px;box-sizing: border-box;">DS-2DC4223IW-D(S6)(C)</span><span style="letter-spacing: 1.2px;box-sizing: border-box;">这个球机为例，在官网中可以查询的到这款球机是23倍光学变倍，4.8-110mm的焦距。</span></p><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(113, 112, 113) 0px 0px 5px;box-sizing: border-box;"></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;">这款为什么就是23倍呢？23倍和焦距毫米数之间又有着什么样的关系呢？</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><span style="color: rgb(113, 112, 113);box-sizing: border-box;">其实就是</span><span style="color: rgb(215, 0, 15);box-sizing: border-box;"><strong style="box-sizing: border-box;">焦距范围中的最大毫米数除以最小毫米数，得出来的结果就是变倍的倍率。</strong></span>那就是我们案例中110mm除以4.8mm，等于23，所以我们称之为23倍变倍倍率。</p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin: 10px 0%;text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 15%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: center;margin: 10px 0% 0px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 100%;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section><section style="display: inline-block;vertical-align: top;width: 8%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: right;margin: 25px 0% 0px;transform: translate3d(4px, 0px, 0px);-webkit-transform: translate3d(4px, 0px, 0px);-moz-transform: translate3d(4px, 0px, 0px);-o-transform: translate3d(4px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 20px;height: 30px;vertical-align: top;overflow: hidden;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/e6c07d07-ada0-4453-a879-1dab45e12dc8.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 54%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;padding: 10px 0px;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;border-width: 3px;border-style: solid;border-color: rgb(0, 0, 0);background-color: rgb(255, 255, 255);box-sizing: border-box;"><section style="margin: -4px 0% -10px;justify-content: center;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 50%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(-4px, 0px, 0px);-webkit-transform: translate3d(-4px, 0px, 0px);-moz-transform: translate3d(-4px, 0px, 0px);-o-transform: translate3d(-4px, 0px, 0px);margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/4e6558eb-3dea-4a21-98a1-1f5b77eec6f2.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 50%;border-width: 0px;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(4px, 0px, 0px) rotateY(180deg);-webkit-transform: translate3d(4px, 0px, 0px) rotateY(180deg);-moz-transform: translate3d(4px, 0px, 0px) rotateY(180deg);-o-transform: translate3d(4px, 0px, 0px) rotateY(180deg);margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;border-width: 0px;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/4e6558eb-3dea-4a21-98a1-1f5b77eec6f2.png" ></section></section></section></section></section></section><section style="margin: -20px 0% -15px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;padding: 5px 10px;border-width: 0px;box-sizing: border-box;"><section style="margin: 5px 0% 0px;transform: translate3d(1px, 0px, 0px);-webkit-transform: translate3d(1px, 0px, 0px);-moz-transform: translate3d(1px, 0px, 0px);-o-transform: translate3d(1px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="padding: 0px;text-align: justify;letter-spacing: 1px;font-size: 14px;box-sizing: border-box;"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">今天的知识点，你学会了吗？</strong></p></section></section></section></section><section style="margin: -10px 0% -4px;transform: rotateX(180deg);-webkit-transform: rotateX(180deg);-moz-transform: rotateX(180deg);-o-transform: rotateX(180deg);justify-content: center;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 50%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(-4px, 0px, 0px);-webkit-transform: translate3d(-4px, 0px, 0px);-moz-transform: translate3d(-4px, 0px, 0px);-o-transform: translate3d(-4px, 0px, 0px);margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/4e6558eb-3dea-4a21-98a1-1f5b77eec6f2.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 50%;border-width: 0px;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(4px, 0px, 0px) rotateY(180deg);-webkit-transform: translate3d(4px, 0px, 0px) rotateY(180deg);-moz-transform: translate3d(4px, 0px, 0px) rotateY(180deg);-o-transform: translate3d(4px, 0px, 0px) rotateY(180deg);margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;border-width: 0px;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/4e6558eb-3dea-4a21-98a1-1f5b77eec6f2.png" ></section></section></section></section></section></section></section></section></section></section></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section class="mp_profile_iframe_wrp"><mpprofile class="js_uneditable custom_select_card mp_profile_iframe" data-pluginname="mpprofile" data-id="MjM5MDgwNjU4MA==" data-headimg="http://mmbiz.qpic.cn/mmbiz_png/p8CaKzvQibq646IdGmcdEibF1UnxF4ofg7rFNcftwJqibGFziawkYxnyE2fectdoxibSSJBzK4jGtaq0tVIn0Pbic3Rg/0?wx_fmt=png" data-nickname="海康威视客户服务" data-alias="hikvision400" data-signature="杭州海康威视数字技术股份有限公司官方服务平台，为用户提供24小时在线技术服务支持，同时支持售后维修申请、知识库、操作视频、安防计算器等功能，为您提供全方位售后服务。" data-from="0"></mpprofile></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: 10%;flex: 0 0 auto;height: auto;padding: 0px 5px;align-self: flex-end;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section><section style="display: inline-block;vertical-align: bottom;width: 90%;align-self: flex-end;flex: 0 0 auto;height: auto;padding: 0px 0px 0px 5px;box-sizing: border-box;"><section style="font-size: 14px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;"></strong></p><p style="white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">分享、在看与点赞，我们需要你的支持~</strong></p></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 20%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 40%;height: auto;box-sizing: border-box;"></section></section><section style="font-size: 12px;font-family: Optima-Regular, PingFangTC-light;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: center;white-space: normal;margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">分享</strong></p></section></section><section style="display: inline-block;vertical-align: top;width: 80%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: right;justify-content: flex-end;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 23%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 40%;height: auto;box-sizing: border-box;"></section></section><section style="margin: 3px 0% 0px;box-sizing: border-box;" powered-by="xiumi.us"><section style="font-size: 12px;color: rgb(62, 62, 62);text-align: center;font-family: Optima-Regular, PingFangTC-light;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">点赞</strong></p></section></section></section><section style="display: inline-block;vertical-align: top;width: 23%;flex: 0 0 auto;height: auto;align-self: flex-start;box-sizing: border-box;"><section style="text-align: center;margin: 0px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 40%;height: auto;box-sizing: border-box;"></section></section><section style="margin: 3px 0% 0px;box-sizing: border-box;" powered-by="xiumi.us"><section style="font-size: 12px;color: rgb(62, 62, 62);text-align: center;font-family: Optima-Regular, PingFangTC-light;box-sizing: border-box;"><p style="margin: 0px;padding: 0px;box-sizing: border-box;"><strong style="box-sizing: border-box;">在看</strong></p></section></section></section></section></section></section></section>
页:
[1]