每组数字并非是光圈打开大小的特定值，只是一个程度的相关体现。

Each number does not necessarily correspond to a specific size of the aperture opening, but is a relative number.

youdao

每组数字并非是光圈打开大小的特定值，只是一个程度的相关体现。

Each number does not necessarily correspond to a specific size of the aperture opening, but is a relative number.

youdao