A Cropped camera only use the

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

所有跟帖： 

• 你击中了要点，我的D50 photo没有那么明显。 -Fruitpassion- ♀ (83 bytes) () 05/17/2007 postreply 10:27:24

• Key: same wide angle, not same lens. -pieq314- ♀ (648 bytes) () 05/17/2007 postreply 10:34:00

• Please read the article on my previous post, it illustrate -天逸- ♂ (57 bytes) () 05/17/2007 postreply 10:40:26

• Again, We are discussing about venetting -天逸- ♂ (413 bytes) () 05/17/2007 postreply 10:46:52

• You are definitely talking about different thing. -pieq314- ♀ (722 bytes) () 05/17/2007 postreply 11:05:41

• I rest my case. No point in discussing further. -天逸- ♂ (0 bytes) () 05/17/2007 postreply 11:19:37

• Thank you , to both of you. 你们的争论很有意思 (图) -Fruitpassion- ♀ (473 bytes) () 05/17/2007 postreply 13:01:49

• Glad that you find it interesting. -pieq314- ♀ (0 bytes) () 05/17/2007 postreply 20:01:10