The Sigma 20mm f/1.4 DG HSM Art Lens for Canon EF is a full frame wide angle prime by Sigma from the ART series. Lenses from the Art series are robust and offer high optical quality. The lens has an aperture range of F1.4 to F16, a Hyper Sonic AF motor you can barely hear when focusing and a manual override to allow for manual focusing.

In addition, the lens consists of 15 elements in 11 groups with 9 rounded blades for a very soft bokeh. The lens also has two FLD elements, five SLD elements and super multilayer coating to prevent chromatic aberration, ghosting and flares. The angle of view is 94.5°. Its dimensions are 90.7 x 129.8 mm.