Has anyone compared the sharpness and aberrations (CA, etc.) of these two lenses at similar apertures, preferably on the same body? Which gives a sharper image (particularly in the corners)? What about aberrations?
Obviously there are differences (f/2.8 vs f/4, and 11mm at the wide end vs 14mm, as well as being entirely different lens mounts), but, for the average landscape photographer, who can use both lenses on a Canon or Sony body and doesn't usually care too much about AF or f/2.8, they're comparable lenses.
Photozone has tested both of these, but, as the Canon was tested on a 50MP 5Ds and the Nikon on a 24MP D3x, the numbers generated aren't directly comparable.