Thanks, so the AF-S design is a big factor too

来源: 于 2009-07-27 12:43:35 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

How do you measure the AF speed of any given lens?

Yesterday I used 18-70mm to practice panning. 99% of the shots are very blur. Could it be that lens focus slow? It is an AF-S.