每个镜头都有自己最清晰的光圈，一般在f8左右。见内：

来源: 于 2023-06-05 13:24:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

How to Find Your Lens's Sharpest Aperture or Sweet Spot

https://www.bhphotovideo.com/explora/photography/features/lens-sharpest-aperture-sweet-spot

The conclusion is,  

In my apinion, the best lens for taking pictures of a soccer game is 80-200 mm, f2.8. 24-70 mm, f2.8 is best for wedding and journalism.