Rokinon Xeen XN50-C 50mm T1.5 Professional Cine Lens for Canon EF Features an aluminum body for increased durability, a tripod mount, large & easy to read markings, and a long focus throw (200 Degree) Unified focus, aperture gear and T-stop scale positions among all Xeen by Rokinon lenses Xeen by Rokinon lenses all have a 11 bladed diaphragm & unified 114mm front diameters for use with standard matte boxes Angle of view 28.4on full frame cameras; 18.7 on APS-C cameras; 19.0 on Super 35 cameras & 14.4 on MFT cameras weighs only 2.7 lbs.