Comments about Leica Leica 80-200mm f/4 VARIO-ELMAR-R Telephoto Zoom Manual Focus Lens for R System - USA:
I use this lens, via a Novoflex, adapter, on my Canon digital SLRs. Of course, there's no autofocus, and the aperture has to be set manually as well. In aperture-priority mode, the camera will set the shutter speed automatically, but often as not I set the shutter speed manually. If you can, or don't mind, working this way, this lens delivers everything that Leica is famous for: high resolution and contrast, terrific color fidelity, near zero flare, very low geometric distortion. It's as good as it gets.