The Digital Picture has the crops up for comparison:
http://www.the-digital-picture.com/News/News-Post.aspx?News=14614
It looks very good to me, and I'm pleased to see how sharp it is compared to the other lenses in the range. It holds its own against the 16-35 f/4 IS, with less distortion, is better at 24mm than the 24-70 f/2.8 II, kills the Sigma 12-24 II, and stopped down, is as sharper or sharper than all but the TS-E 17 and 24II lenses. It sure makes me feel better about the money spent.
http://www.the-digital-picture.com/News/News-Post.aspx?News=14614
It looks very good to me, and I'm pleased to see how sharp it is compared to the other lenses in the range. It holds its own against the 16-35 f/4 IS, with less distortion, is better at 24mm than the 24-70 f/2.8 II, kills the Sigma 12-24 II, and stopped down, is as sharper or sharper than all but the TS-E 17 and 24II lenses. It sure makes me feel better about the money spent.