Zeiss Contax 50mm f/1.4 Planar cinemodded EF-Mount, declicked iris, 0.8 gears for iris and focus, 80mm front with 77mm thread, fullframe coverage, 460 gr The second out of three lenses with a stop of f/1.4 and the unique vintage look of mid 90ies Zeiss lenses. The glass and the T* coating are the same that has been used with the well known Zeiss Super Speeds for cinematic use.