I wonder if you had a chance to test some vintage M42 and Contax mount Russian glass on R? i.e.: Helios 44-2, 40-2, 103, Jupiter, 8, 12? LTM mount lenses unfortunately are not amazing in extreme corners on FF mirrorless. I have a massive collection of vintage film cameras and lenses, hence my question
Speaking of manual lenses, I haven't been able to find any reviews of the EOS R's "Focus Assist" technology. Anyone have any experience yet with that on the R (I realize the Cinema cameras have some version of it already)?