Product Highlights Aperture has Range: f/1.2-16 High Precision Aspherical Lens Element Floating Optical System EF Mounted L-Series Lens Manual Focus Override Dust & Moisture Resistant Sealing Truly Circular Diaphragm Ultrasonic Autofocus Motor Super Spectra Coverings Filter Thread’s Diameter is 72mm The EF 85mm f/1.2L II USM Lens from Canon is a speedy, average telephoto lens which delivers outstanding optical performance. A maximum aperture of f/1.2 makes it the professional’s selection for shooting without flash in darker conditions. The large aperture also gives fine control on depth of field for convincing portrait photographs. A floating optical system and high accuracy aspherical lens element decrease aberrations and contributes to excellent imaging performance even at the utmost aperture. Super Spectra lens coatings reduce reflections, decreasing ghosting and flare. Maintaining the exciting optical performance and huge aperture of its ancestor, this lens has been enhanced with a ring-type ultrasonic autofocus motor (USM), fast CPU and optimized algorithms to attain high-speed, smooth and silent autofocus. Manual focus override lets exact manual focus at every time, even in AF mode. The really circular aperture forms a shallow depth-of-field which brings consideration to the subject and smudges the background, which is perfect for portraits. This L-series lens features sealing to guard the lens from damage occur by moisture and dust. L-Series The L-series is Canon’s flagship professional lens range, joining exceptional image performance and eventual operability with dust and water resistant construction. Large f/1.2 Aperture The large maximum aperture of f/1.2 offers wonderful speed for shooting in less light conditions, without the requirement for flash. Fast and Quiet AF The USM ring-type uses ultrasonic frequency vibrations used for driving extremely quick autofocus with near to silent operation. A very fast CPU & optimized AF algorithms provide more to AF speed. All-time electronic manual focus override is there with no switch out of AF. Super Spectra Coatings Super Spectra lens coatings & lens element determining suppresses flaring and ghosting, more horizontal to happen with digital cameras due to reflection off the sensor of image. Coatings also help to get accurate balance of color and enhance contrast for vivid highly reliable images. Aspherical Element The floating optical system, which includes aspherical lens element, suppresses aberrations and makes sure brilliant imaging performance. 8-Bladed Circular Aperture The round aperture forms a less depth-of-field which brings notice to the object and blurs the background, which is perfect for portraits.