I currently have a 50 summicron #11819 with convex tab focus made in Canada. Love it. But I really like the idea of a focus ring I can grab onto, especially when shooting vertically...Can someone describe their personal impressions of any or all of the following lenses? (In case it makes a difference, I shoot film still.)
Leica 50 summicron (11819)
Leica 50 summicron (current)
Zeiss 50 planar
Thanks!