This lens was made for the late Topcon cameraes, RE 200 and RE 300. The lens was fabricated by Cimko and resembles the AM Topcors also made by Cimko. It is a lens with very good performance from f. 2.8. Maybe Topcon (Tokyo Kogaku) has designed the optical elements. It is hard to find information on this lens and it seems thait it is rather rare. There are also a more common 55 mm f.1.7 in the same line.
Posted by:Klaus Bo Date of publication: 27.11.2020