Get the Canon EF 11-24mm f/4L USM at B&H Photo.
This group of four aperture series spans the zoom range with similar subject matter in order to paint a comprehensive picture of the remarkably consistent imaging quality of the Canon 11-24mm f/4L.
Presented with HD and UltraHD images with various sizes including full resolution 5760-pixel wide images. One can thus see performance in its entirety at any of the apertures.
I’m impressed—I deem the Canon 11-24mm f/4L the best wide angle zoom that Canon has yet produced. And I love having that extra 11-16mm zoom range (as compared to the 16-35 or 17-35 lenses). Having the 11-24/4L plus 24-70/2.8L II covers a lot of range.
If I had to hazard a guess, the 11-24mm f/4L was expressly designed to hold up well on the new 50-megapixel Canon 5D S (though virtually all lenses will show some weaknesses at 50 megapixels). At about $2999 it’s hardly inexpensive, but given the unprecedented range and image quality, it’s a winner.