I had this image, actually a whole batch of images, refused on the basis of: Poor optical performance due to low lens quality, such as lens fringing, chromatic aberrations, uneven sharpness in focus area.
This is one of them: http://www.flickr.com/photos/31095909@N07/8089940213/in/photostream
I dont see anything wrong with this image, so I tried to get an explanation from support but after several emails un-replied, I gave up.
I wonder if any editor or colleage photographer could tell me where are the problems mentioned and point them out to me.
I think the main problem is "Canon Digital IXUS 850 IS". From my experience most of my Point&Shoot camera is not enough quality wise for Stock except when the light condition is more that perfect. And a second thing is the bottom right part of your picture. It is blur comparing to the rest of your picture.
PS: I confirm that DT answer to all my mails and the answers are very helpful.