摄像机镜头详细知识 镜头选型
https://blog.csdn.net/qq_35247586/article/details/105622167#3-1%E3%80%81%20%E7%84%A6%E8%B7%9D
镜头选型
http://mimacro.cn/index.php?case=archive&act=list&catid=17
https://blog.csdn.net/qq_35247586/article/details/105622167#3-1%E3%80%81%20%E7%84%A6%E8%B7%9D
http://mimacro.cn/index.php?case=archive&act=list&catid=17