in the last several weddings i have shot, some of the negs have come out without the amt of subtlety and detail that they should have. i shoot kodak vc 400, fuji nph, agfa apx, and delta 400 (all 35mm). the images that the negs produce have lots of unnatural looking grain (almost a pixelated effect), and not enough transitional tones within shadows, etc. the negs that turn out this way have been both natural light and flash photos, shot with several different cameras and lenses. it is extremely bizarre/troubling, and i would appreciate any insight anyone might have.