某数码相机的镜头焦距是5mm，相对孔径是1：2.5，则其入瞳直径是（）_精华吧

某数码相机的镜头焦距是5mm，相对孔径是1：2.5，则其入瞳直径是（）

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某数码相机的镜头焦距是5mm，相对孔径是1：2.5，则其入瞳直径是（）

A.12.5mm

B.2mm

C.6.25mm

D.1mm

正确答案：2mm

Tag：数码摄影技术孔径焦距时间：2022-03-07 20:16:53

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