I just wanted to add a comment. Last weekend I did a very non-scientific comparison between this scanner and the professional Noritsu scans I pay for occasionally. I got some 35mm Provia scanned on the Noritsu, creating 6MP TIFF files for $8 per roll...not exactly top quality, but not bad either. I picked one frame and scanned it on my Canonscan at full resolution, creating a TIFF file that's about 12.4 MP. When I zoomed in to 100%, there was no amount of post processing that could bring out as much detail in the 12MP file as what can be seen in the 6 MP file. I think the moral of the story is, don't place too much value on the resolution claims. Obviously the Noritsu is a high dollar professional machine, but even at twice the resolution the Canoscan recorded less detail.
For web viewing, the Canonscan is fine, but don't expect to make large prints with it. Hope this helps.
Paul