Ultra Wide Angle lens recommendation for Canon T3i

[btaylor]

Canon 10-22mm without a doubt. I had it for my 40D and I absolutely loved it. Optically excellent, colour and contrast is exceptional. Don

[Sean Setters]

An ultra-wide angle lens isn't necessarily best suited for my type of work (primarily portraiture), but it's still a great tool when space is limited:








Or else you want to exaggerate a part of the scene with the natural distortion the lens produces at 10mm:

[Chernenk]

I own the Tokina 11-16 2.8 and have found it excellent. Fixed 2.8 aperture is a big plus for me.

[Jordan]

I'd suggest the Tokina 11-16mm f/2.8 (I used to own it and LOVED it) or the Sigma 10-20 f/3.5 which is fairly new and supposedly very nice!
Here is my super-wide angle gallery: http://freshphoto.zenfolio.com/superwideangle