Sleek ultra-wide-angle prime is designed for use with full-frame Canon RF-mount mirrorless digital cameras. Bright f/2.8 maximum aperture suits working available lighting conditions, helps control depth of field, and contributes to a sleek form factor. One aspherical element helps control distortion and promotes a high degree of sharpness. Super Spectra Coating has been applied to minimize flare and ghosting for improved contrast and color fidelity when working in strong lighting conditions. STM stepping motor offers fast, quiet, smooth, and accurate autofocus performance that is ideal for video recording as well as still shooting. Minimum focusing distance of 5.1", along with a maximum magnification of 0.26x, makes this a unique option for close-up shooting while retaining great depth of field. Configurable Control Ring can be used to adjust a variety of exposure settings, including aperture, ISO, and exposure compensation. Rounded seven-blade diaphragm contributes to a pleasing bokeh quality.