Summary: Wanted this to scan about 500 slides for my aunt - and any others our family has hidden away. It does a great job if not somewhat slowly. You can load up to 4 slides per scan session (each slide is scanned individually within the session). At 300 dpi the four slides took about 8 minutes. I suspect it will be about twice as fast at 150 dpi, but since I intend to print some of them I need a higher resolution.
Summary: Like the ease of installation on computer and ability to use in under 10 minutes after unpacking. Can't figure out how to darken light images which is maddening. I'm sure there is a way but haven't found it yet. Bought the scanner due to the price point and quality manufacturer.
Summary: I had used this scanner for several months with no problems and good imaging quality. Like several people have reported here, I had a serious issue when I recently went to scan some slides, with a bright stripe appearing in all of the images. I called Canon support, and they indicated it was a simple calibration issue. Sure enough, after I recalibrated it 3 times in a row as instructed, the problem was completely resolved. Very pleased with the image quality now.