TheRokinon Cine DS 135mm T2.2 ED UMC is a fast short telephoto designed for video use, with smooth geared focusing and a geared, stepless aperture control for use in followfocus systems. Of course, you can use this as a stills lens, too. Clean glass, excellent image quality, full-frame coverage. This lens is in EF mount for Canon EOS film and digital cameras (or any other systems that use the EF mount). Please note that this is a manual focus lens and has no electronic coupling. Includes original box and lens hood.