Message #5485

[brianb]

now try putting a 10mm sigma on there!

The Sigma 10-20mm zoom is a good lens at a very reasonable price, but on a 5D the vignetting would be far, far too much - it's designed for crop sensor cameras. For a real wide angle (not fisheye), Tokina do a 12-24mm which covers full frame. The lens I used was the Canon EF 17-40 f/4L; I've never felt the need to go wider than 17mm, had a Tamron 17mm f/3.5 in Olympus OM fitting for years & only used it a few times.