Mitakon Zhongyi Speedmaster 85mm f/1.2 OverviewA truly fast short telephoto prime designed for full-frame Canon EF mount cameras, the Speedmaster 85mm f/1.2 Lens from Mitakon Zhongyi pairs the bright maximum aperture with a portrait-length perspective for extensive focus control and enhanced low-light shooting. The optical design incorporates two extra-low dispersion elements with four high refractive index elements to reduce chromatic aberrations and distortions in order to achieve notable sharpness, even at wide apertures. Additionally, the lens features a manual focus design with a floating elements system, along with a de-clicked, silent aperture ring to benefit both still and video applications. Ideally suited for portraiture applications, the refined optical design, fast maximum aperture, and longer-than-normal perspective help to isolate subject matter and deliver a high degree of sharpness and clarity.Portrait-length 85mm prime is compatible with full-frame Canon EF-mount digital cameras, and can also be used with APS-C-sized sensors where it will provide a 127.5mm equivalent focal length. Fast f/1.2 maximum aperture benefits working in difficult lighting conditions and also enables extensive control over your focus position to benefit the use of selective focus and shallow depth of field techniques. Two extra-low dispersion elements and four high refractive index elements help to reduce chromatic aberrations and distortions throughout the aperture range for greater sharpness, clarity, and color accuracy. Manual focus design utilizes a floating elements system to permit focusing on subjects as close as 3.3' away. De-clicked, stepless aperture ring permits smooth, silent aperture adjustment to benefit video applications. An 11-blade rounded diaphragm contributes a pleasing out-of-focus quality when working with selective focus techniques. All-metal lens barrel features printed depth of field and focus scales. Additionally, a metal lens mount also offers increased durability between the lens and camera.