Bests & Worsts Reviews from Amazon

Currently I have 4 working scanners in my possession, including this Canon scanner, my latest purchase. As I am doing a large project with old family photos, I want a high quality scanner. The one I have been using, an Epson, does a fine job, except for a fine streak in the middle of the scanned image, which led me to purchase the Canon. Of all 4 scanners, including two that are part of all-in-one printer units, the Canon produces the worst quality scan. A total surprise, since the reviews for Canon Mark (and Mark II) scanners so far have been tremendous. In short, I could not get a clean scan--all the images came out with a perceptible double--needless to say, one can't get a sharp scan. (I shall upload photos momentarily.) Now, for casual office work, this will certainly suffice. It scans fast and takes no time to warm up. However, the quality of the scan is unacceptable for those who want to scan old photos as a way of preserving them. I will request an exchange, on the off chance that this is a defective unit. If the next one is better, I will update my review. Meanwhile, if you purchase a scanner, make sure you test it out ASAP, or else you'd be stuck with it after the return deadline. UPDATE: I have since received a replacement unit, which works beautifully! Turned out that my first unit was defective. These things do happen, so it's best to test out your unit ASAP.