One of the cult East German lens, built for Pentacon Six a bit heavy, quality lens.
Looks big and quite heavy, but very easy to operate. Color and sharpness exceptional good, not very common but not much rare. I like to shoot with this lens, it is one of my favorite. It has tripod collar and big lens shade. When this lens came out it was an expensive one, not many people could buy it, this is partially luck because many of them survived in good condition. Recommended lens to buy, I suppose it hasÂ better color and sharpness than Nikkor 300mm f/4.5 AI has, but Tamron SP 300 f/5.6 is still the winner in my 300mm lens collection.