Sigma long ago established themselves as one of the premier manufacturers of lenses that offer top-level image quality that professional photographers demand at prices that often significantly undercut those of first-party manufacturers. Two of their options, the 50mm f/1.4 DG DN Art and 50mm f/2 DG DN Contemporary, often similar capabilities but with different experiences and at different prices. Which is right for you? This insightful video comparison will help you pick.