Vintage CYCLOP 100mm f2 LENS Caps M42 mount adaptable to mirrorless and EF canon.

This is a rare reiteration of a lens from soviet night vision device, does not feature the diaphragm, can only be used wide open at f2.0, glass is clean, no scratches, fungus or haze, smooth focus. Lens has standard pentax M42 screw mount and with right adapters can be used on all mirrorless cameras as well as some dslrs.