A Cropped camera only use the

来源: 于 2007-05-17 10:05:54 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

center of the lens, while a full frame utilize the full circle of the lens, thus easier to cause venetting, it's a proven fact, it's nothing to do with Nikon or Canon, please check this full review, 5D vs 20D
http://www.dpreview.com/reviews/canoneos5d/page24.asp