canon ef 50mm f/1.2 l usm lens for canon digital slr cameras - fixed (renewed) canon the canon ef 50mm f/1.2l usm autofocus lens is a peerless new standard lens featuring an ultra-large aperture for a narrow depth of field and soft background blur so loved by photographers everywhere. the ef 50mm f/1.2l usm is suitable for any shooting situation; its lens coating and construction are optimized to minimize the ghosting and flare that frequently occurs when lenses are used with digital cameras. this high-performance, weather-resistant lens delivers all the superb image resolution and contrast you expect in a canon l series lens. features high-performance, weather-resistant standard lens af with full-time manual focus 50mm focal length f1.2 maximum aperture; 72mm filter size ultrasonic motor (usm)