If your subjects move, you need the F2.8

来源: 于 2013-01-10 10:58:27 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

The F4 VR III should be o.k. in a studio setting where everyone shoots F8.  For any sporting events - you will need the F2.8 VR II.  

It is not just F stop.  For example, the mechanism enables the 70-200mm F2.8 VR II focus a lot faster than the 85mm 1.4 G AF-S.   

Did not use 70-200mm VR I, can't comment on it.