The rehoused “eye of Sauron” 200mm lens by Zero Optik. 200/T2.0 will complete any of vintage style set of lenses like Canon K-35 or FD of course but also Olympus OM and Nikon Al-S. It’s so small that it has 114mm front and only 2.9kg. CF is also corrected, instead of 2.5m it is 2.28m.