The L-series is Canon's flagship professional lens range representing one of the best in precision-designed EF optics A virtually circular aperture diaphragm gives out of focus regions a softer, more uniform feel. Sharp foreground objects stand out against a smooth blurred background Spectra coatings ensure accurate colour balance and enhance contrast and also reduce flare and ghosting A large maximum aperture of f/1.2 allows the use of fast shutter speeds when shooting in low light A ring-type ultrasonic motor drives autofocus extremely quickly and in near silence The L-series is Canon's flagship professional lens range, designed and built to meet the needs of the most demanding professional photographers. The superb optics of the EF 85mm f/1.2 II USM and other L-series lenses represent the pinnacle of optical performance, enabling focal length/speed/quality combinations not readily attainable using traditional optical technologies. In addition to optimised lens shaping to reduce reflections and the use of anti-reflective material inside the lens barrel, the EF 85mm f/1.2 II USM employs Canon's patented Super Spectra lens element coatings. These suppress flare and ghosting - more prone to occur with digital cameras due to reflection off the image sensor. By increasing light absorption, coatings reduce reflections off lens element surfaces to deliver crisp, undistorted images with natural color balance.