Sigma 10-20 vs canon 10-22 UWA

thanks for all who replied. I really expected more responses for the canon. I was leaning toward the sigma already and this pretty much reinforced my decision. I am going to wait a few months and make the purchase. Going to Italy this summer and think this lens will really come in handy.

After having two copies of the Sigma that had focus issues, the second copy I even had Sigma's repair center check out and was told it was within spec, I sent the Sigma back and bought the Canon. For $200 more you will get shots that are sharper throughout the apeture range with the Canon.

Before making my choice I borrowed a friend's 10-20 - spent ages trying to get both left and right sides sharp in the same image - gave up - bought the Canon - never regretted it. It's worth the price difference for the flare control alone.