I have both a Componon and a Componar. The Componon is a 150/f5.6 with a m39 mount,from 1964, and the Componar is a 75/f4.5 with a m25 mount made in 1963. Both give outstanding results up to 11x14, although I rarely print past 8x10. I really enjoy using the older lenses, harkens me back to my early days in the DR. My first lenses were Wollensak, which I still love, but the Schneiders were top shelf and I had worked my tail off to afford them(at the time).