Hi! I shoot a Mamiya 7 which produces 6x7 negatives. Made shots at dusk, and the lighter part of the sky looks perfect on the negative, normal very fine grain) but when scanned I get extremely coars grain. I use an Epson V750 pro at 2500 DPI and silverfast software. The image was saved as a JPEG of high quality (Photoshop 12) Can you tell me if there's something that can be done about it? Here is the shot, first the complete image, and then an area 600 pixels wide.