标签:focal - 华人论坛

加拿大进出口外贸

For areas where the focal length would go below?

在加拿大 Focal Length: 45mm from center of lens decreasing in focal length linearly by 2.1 millimeters per millimeter of radius. For areas where the focal length would go below 30mm use 30mm focal length instead. 遇到这种长句子 我就头晕了...华人论坛