I'm surprised no one has mentioned the Kodak Pro Photo CD with the extra 6th resolution 4k scan, a 72mb file at 4096 x 6144 pixels. If you have "some 4x5 negatives" that may be an option to check at your local Pro Lab, not to mention you have the images archived to disc for a relatively inexpensive cost and time savings. Ralph Ralph Rinke - Photographer rrphotog@intergate.ca