I recently had 2 shots rejected for compression only. My question is how can a file that is 1100-1200 pixels wide and less than 1MB, saved at 12 (Maximum) in Photoshop be compressed? Also, how can you tell if a shot is compressed, does the overall quality go down? Another thought I had was that this was with a new lens. I don't think it has anything to do with this matter, but it is a thought. Just curious on what some people think. Thanks.