Last tuesday I bought an UWA, the EF-S 10-22 from Canon. It's more expensive than the Sigma 10-20 and Tokina 12-24, but also better IMHO. And why settle for less?
I sold my Peleng 8mm fisheye for it, and already had more fun with this lens. Some pics:
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EOS 5D|EOS 600|15-30|24 1.4 L|135 2 L|2x 580EX|2x CP-E3|ST-E2|2x Pocket Wizzard Plus II|IXUS 850IS|Crumpler|Manfrotto|
New Lens - EF-S 10-22
Threaded Mode