The following is an attempt to show the differences in the quality of scanned coin images relative to the cost (quality?) of scanners as discussed on Moneta-L.
My 1st attempt compared 3 UMAX scanners, a Vista 1220U, a Vista 2400 (or an S-8) and a Powerlook III which cosy about $150, $350 adn $750 respectively. Following some discussio, I decided to just compate the 1220 and the PL111 and to separate AR, AE and AV giving more examples.
These pages are best viewed at 1024 x 768 or larger and with 24 bit color (millions of colors).