Quote Originally Posted by Kokopeli
I know good ol' Paul has already answered your main question so I won't bother. What I will do is assure you that you are going to LOVE this lens. I own it and have been happy with it since day one.

I look forward to seeing some of your images shot with it.
~Brian
Thanks... now I'm depressed. The lens is apparently not compatible with my Rebel TI, and I'm going to have to send it in to be rechipped. Serves me right for buying on Ebay, I suppose. Oh well, I got a good deal, and I don't think that Sigma charges for rechipping. If anyone else has experienced this problem, please let me know. Thanks!