Canon L Lenses

[fokker]

Interesting point about the sigma 10-20mm, I have one of these and even though they aren't supposed to work on full frame, we tried it on my friend's 5D mk2 and at about 14mm it gives a full fisheye effect, so it is really a lens that you could hang onto if you upgraded to full frame.

That's an interesting one. I thought the EF-S mount meant it simply could not fit on a full frame camera at all?? How is it that you can get that lens to fit?

Incidentally, please take note the 10-22 is different from the 10-20 - two different lenses. I have the 10-22 as it gives a larger aperture in case I want to take some shots in low light.

Well, the sigma 10-20 doesn't really specify EF or EF-S, it just for canon, and for digital. It has a white square which indicates EF-S mount (crop bodies only), but it lines up with the red dot on the camera body which means it is actually EF mount. It gives a decent sized black vignette on the full frame, but it gives a proper fisheye effect in the middle.