Biotar 40mm f/1.9 M39(LTM/LSM) Carl Zeiss Jena Robot

Biotar 40mm f/1.9 M39(LTM/LSM) Carl Zeiss Jena Robot The flange distance has been modified in my workshop to 28.8 mm. The lens has been converted to the M39 mount(Leica thread mount), without Leica rangefinder coupling. To use it on your mirrorless camera, you will need an M39 (Leica) to your camera’s mount adapter. This lens has been fully serviced in my workshop with the latest in lubrication and cleaning. This lens’s focusing ring has a click. There are many cleaning marks on the glasses.