Canon EF 11–24mm f/4L USM is an ultra-wide zoom created for demanding photographers, ideal for landscapes, architecture, and interiors. It is the widest rectilinear lens available for full-frame cameras, with advanced optics minimizing distortion. The design includes UD and Super UD elements to reduce all types of optical aberrations. Multiple lens coatings suppress flare and ghosting for exceptional image quality. A ring-type USM motor provides fast, nearly silent autofocus with full-time manual override. Included: Canon EF 11–24mm f/4L USM lens, front and rear caps, transport pouch.