How can I work out the pixel size of my existing many hundreds of photgraphs of my postage stamps for sale?
Will I have to re-scan them (It seems that for a small size single stamp I'll need to scan at least at 600 dpi, but this would be a HUGE and ONEROUS task which I will have to undertake before I can re-list them! (single stamps may be as small as one inch or the LONGEST side).
