摄像机镜头 怎么选 比如2.8-8 能照多远 定焦3.6 能照多少 有没有公式
额 软件下不下来 能发我邮箱不 490493400@qq.com
镜头焦距 | 监控距离 | CCD视角(1/3”) |
2.8mm | 4.3m | 86.3° |
3.5mm | 5.4m | 67.4° |
4mm | 6m | 62° |
4.8mm | 7.3m | 52.2° |
6mm | 9m | 42.3° |
8mm | 12m | 32.6° |
12mm | 18m | 22.1° |
16mm | 25m | 17.1° |
25mm | 38m | 10.6° |
60mm | 120m | 2.5° |
73.8mm | 150m | 2.9° |
学习了
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