The superior-quality Canon EF 35mm f/1.4L USM Wide-Angle Autofocus Lens features a brilliant maximum aperture of f/1.4, the largest in its class, along with the superior natural image quality of Canon L-series lenses. An advanced floating mechanism and a ground and polished aspherical lens element achieve extremely sharp, distortion free pictures from infinity to its closest shooting distance of 1.0'/0.3 m. With ring USM-powered rear focus, autofocus is stealthy and swift. A wide focusing ring provides comfortable manual focus, and the filter ring remains stationary for ease of use with polarizers and other special effects filters.