First some background. I recently got my first dSLR (Canon T1i) and after using it for a little over a month I decided that I need a wide-angle lens to compliment the kit lens (18-55) and the Canon 55-250 I bought for it (I also bought the Canon 50 f/1.8). So on Monday night (after one too many glasses of wine) I went ahead and bought the Canon 10-22 f/3.5-4.5 USM ($699 from Adorama). I got the lens on Wednesday (shipped to my office, since I didn't want my wife to know I bought another lens, costing almost as much as the camera!), and took it out on the town (Boston) at lunchtime, seeing it was a beautiful, sunny day. I took about a hundred shots in a span of an hour, and while there are quite a few that I am very pleased with, many leave a lot to be desired. As I said, it was sunny day, with plenty of blue in the sky, as evidenced by the first shot attached at the bottom (statue of George Washington). This (and a few other shots) notwithstanding, a lot of the other shots came out like the other three you see here, with the sky looking almost white, as though the picture was overexposed, which it clearly is not, judging by other elements (buildings, cars, people) in the photo. At this point I'm leaning toward returning the lens (a hassle and an expense, more so since I'll have to insure the shipment back to Adorama), because even though I've taken some amazing shots that I would not be able to take with any other lens (e.g, a picture of my wife's 6' circular flower bed while standing right beside it, which looks as though it was taken from 15 feet up!), the inconsistent color/exposure is a deal breaker for me. Now it's possible that I could improve this by using a polarizing filter, but I seriously doubt it. All the attached shots were taken in P mode with auto ISO, auto f, auto speed, the only adjustment to full auto being a little bit of in-camera sharpening. I feel the lens is not worth $699 for the few keepers that I could not otherwise get with my other lenses, of which I like the 50-250 mm the best (very sharp, consistent IQ) I'm trying to decide between these three courses of action: 1. Keep it and see what happens after I put the polarizer on the lens. 2. Return it and live with the lenses I have, until I gain more experience with the camera. 3. Return it and buy something not as wide as the 10-22, but more versatile and sharper than the kit lens (which I like the least of the 3 lenses I have)? I would appreciate any advice, especially from those who own or have used the 10-22.