The Sigma 20mm f/1.4 DG HSM Art Lens is an ultra wide angle lens, suitable for Canon EOS full frame digital SLR cameras. Offering a super fast f1.4 gives the Sigma 20mm f/1.4 DG HSM Art lens a broad appeal, in particular landscape, architectural, travel, events and low-light astrophotography. Both Full frame and APS-C sensor compatible lens providing outstanding optical performance and quick AF speed. The Sigma 20mm f1.4 Art lens for Canon features a minimum focusing distance of just 27.5cm, HSM (Hyper Sonic Motor) ensuring a silent and high-speed AF function. Furthermore for beautiful bokeh, look no further the 20mm Art lens which boasts a 9 blade rounded diaphragm creating an attractive round bokeh at large-apertures.