For a long time, the Canon EF 14mm f/2.8L II lens has been one of my favorites. It's a beautiful lens, plenty wide, very sharp, and nicely corrected. It's a great lens and I've produced some fantastic images with it. I captured this image of Hoover Dam the other night while I was in Vegas for work. I shot this on the 5D Mk III with the 14mm lens. I like the image. I think it works well. But, it would be nice to be able to shoot a little wider so that I didn't cut off the far end of the bridge or clip the bottom of the near tower.
Well, lucky for me, I had the opportunity to bring along the Canon EF 11-24mm f/4.0L lens. I had been wanting to shoot with this since it was announced. I did not move my camera between these shots, I simply swapped the lenses. I only shot with it for a few minutes, and now I can't wait to get my hands on it again. This thing is sharp edge to edge. And, not only is it wide, it is also corrected so that things stay nice and straight. This will be a fun lens in a lot of situations.
By the way, you really should take the extra effort to click on the images. . .