Wow! I had no idea that a 10-22 could be hacked to work on a 5D. Looked around the internets and found out how! I'm like a pig in hog heaven!!! Until I read this thread my 5D was limited to a widest setting of 50mm (50 1.4 70-200 2.8 70-300 IS are the only EF lenses I own).
Now I have a 14-22 F4 4.5 as well
It works at 13 and 12.5 if a 16:9 or 2:1 crop is planned, but from 14 up it's perfect!!!
Words cannot begin to describe my happeliciousness!
lisy78 i'm glad you have a new lens. Be carefull shooting people with it I only use it very close to 22 and keep near the center of the frame as possible. It distorts real bad at the edges besides being slow. I will be geting a proper wide for the full frame. For now it does have it's uses.