09-27-2022, 11:48 PM
It's a question of fidelity vs. disk space, basically. Typical screens are 100-200 dpi (200+ for "retina" or "hidpi"), so 300dpi should be plenty. You could scan at higher resolution to be "future proof" if you don't mind slower loading and more disk space. Also, you can always resize the images to lower res (there are plenty of batch tools for this) but you can't increase the resolution.