|Lens Comparison: Sigma 35mm f/1.4 "Art" vs. Canon 35mm f/1.4L USM||Small | Large|
Here's a reviewer who makes the comparison and likes the sigma better in: 1.) sharpness, both in center and at edges, 2.) CR/fringing, and 3.) Bokeh. He says the AF is a tie, which in practice sometimes was actually won by the Sigma. Lots of images.