This item is a Contax Carl Zeiss Distagon 35mm / f2.8 prime lens.

Native lens mount is Contax. The lens comes with a Canon EOS mount adaptor (removable), which allows the lens to be used on camera's like a Canon 5d, 7d etc.

The lens is fully manual, with a manual iris.

Lens glass is in excellent condition, no scratches, fungus, haze or anything. Perfect glass.

The lens has a few minor cosmetic marks on it but nothing too obvious.

Focus ring is super smooth and silky

These lenses are designed to cover full frame, so no vignetting on full frame stills camera's. Also cover's a Red Epic sensor in 5k. And any super 35 digital video cameras.

The lens has a front step up ring (removable), that gives a 77mm diameter front filter screw thread (lens front filter thread is 55mm

These are very high quality lense's, very similar design to the Zeiss ZF range.

Currently has a Canon EOS mount adaptor but you can also get a very low priced adaptor to use as Nikon mount.