The Zeiss Compact Prime CP.2 50mm/T2.1 Cine Lens (Canon EF Mount) is part of the second generation of CP cinema lenses that were the first to offer full-frame 35mm coverage of large sensor DSLRs (such as the Canon 5D Mark II). The Compact Prime CP.2 lenses cover a full-frame image format without vignetting.
The iris opening of the Compact Prime CP.2 lenses is created by 14 high precision blades. It stays consistently round and symmetrical over the entire T-stop range. This translates into natural and pleasing out-of-focus highlights and a smooth bokeh.