Copyright 1998, Allan W. Jayne, Jr. unless otherwise noted or other origin stated. Go to table of contents . If you have a slide scanner, scan negatives or slides at 2200-2700 dpi. However do not exceed the scanner's optical resolution, all that does is consume more disk space.
All photographs fade with age, some faster than others.
If you have some faded photographs, your only hope for preserving the images for future generations might be scanning them and then enhancing the scans using computer software. Only when three or more fine details are next to each other is such scanner resolution needed. To save time over examining each picture to decide what resolution to scan it at. So all the scans will be the same size. To reduce moire patterns.