hummm... hi all... long time no see. First of all: I don't like Canon digital products of consumer level. Thay are cheap (a good point) but of low-quality in material and in problem solutions at interface and electronic level. This is the principal reason for their price. The LED system that is used in the CANON scanners (ALL the canon scanning machines) is very approssimative in detecting colors and grain. also it is very limited if you use non-bidimensional supports. for example: try to scan a watch... the LED system "catch" what is in direct contact wityh the glass but will not scan deeper. So you could lose informations from a non-perfectly plain document. The color profiles of the canon scanners (but canon printers have the same problems too) are very inaccurate. Even using an hardware calibrated monitor and using Colorsync. Epson scanners are better. so buy one of these if you could afford it. Canon scanners are wasted money if you plan to buy a mid to high quality scanner. Other choice. If you don't need a transparency adapter try to locate an Heidelberg-Hell Jade2 Scanner. you could purchase it for less than 100$ and you will have a superior scanning machine for non-transparent supports. And the software is the better piece of soft for scanning i've ever seen.