The huge price difference between Zeiss lenses and Kiev, Arsenal and other Russian made lenses makes the russian lenses to be an appealing alternative to expensive Zeiss lenses. The downside of Russian lenses is often their quality control. Optically is Russian lenses often fantastically superb, but then they can also be very bad if you get … Continue reading 300mm f4.5 Tayir-33 lens on A-Mount