I love this lens! Incredibly sharp wide open with glorious Pre war Zeiss Sonnar Bokeh. It works well on my kiev 4a and my amedeo adapter with Leica M3. I can use the Leica's 90mm frameline to approximate the 85 mm feild of view. This lens is the best money dollar for dollar that I have ever spent on the lens. Thanks Yuri, you have gained a loyal customer.