Posted By:
AnonymousI had a post a long time back that contained a link on why some scanners work better on these types of items than others - unfortunately, I can't seem to figure out how to search for messages I've posted so will have to go from memory.
Bottom line is that the very thin scanners can do a nice job scanning but do not work on items with depth, such as slabbed cards, very well. This is because the optics (LED?) that are used which allow the ultrathin scanners to be so compact also rely on technology that does not have a good depth of focus. Scanners that use a bulb or lamp (I don't know what the correct term is) do a much better job of scanning which is why my cheap old scanner (which I got rid of because it was pretty slow and really equipped for Windows 95) did a pretty good job but the compact Canon LIDE I replaced it with was blurry. I ended up giving that one away to my sister and replacing it with another inexpensive Canon model and have been very happy with the quality of my scans.
Adam B