Bobu Offline Upload & Sell: Off
|
p.1 #1 · p.1 #1 · Nikon 14-24/2.8 - some questions (full res images!) | |
I have some questions regarding the Nikon 2.8/14-24mm lens. I used this lens on a Canon 5D II for about one year (with 16-9-adapter).
Most of the pictures are very good: great contrast and very good sharpness, even in the extreme corners. But once in while I get a picture where some corners or some edges are really soft.
This happens mostly at 14mm focal length, with apertures between 2.8 and 5.6 and a focus point at close distances (between2 and 5 meters). Strange is, that only some corners appear soft while others (and the center) are still very sharp. The camera was always mounted on a tripod with mirror lockup and live-view-focusing.
Here are two full-res examples (probably at f/5.6). On the first pictures you can clearly see, that the upper left and upper right corners/edges are soft, while the rest of the image is pretty sharp. On the second image you can see that the right edge is soft, everything else looks sharp.
When I take pictures of a flat wall I don't see any differences between the corners and everything looks pretty good at f/5.6.
Is this strange behavior typical for this lens? Any ideas what's the reason for this is?
By the way Nikon tested this lens twice with the result that everything is perfectly within the spec.
Boris
#1:
http://farm5.static.flickr.com/4095/4793542517_4bde3322a3_o.jpg
#2:
http://farm5.static.flickr.com/4143/4793475165_c60f850311_o.jpg
|