Leica 50mm f/2 APO-Summicron-M ASPH
The Leica 50mm f/2 APO-Summicron-M ASPH is an outstanding lens, but sensor design has a lot to do with how rangefinder lenses perform on digital, a situation that might improve in the future.
Aperture Series Leica 50/2 APO: Bikes at Night (Sony A7R)
This particular scene caught my attention for its potential to show a number of optical behaviors—and it does so quite well; it is deceptively simple but quite difficult to render well.
This f/2 - f/8 aperture series includes HD and UltraHD images as well as large crops across the aperture series.
Sony A7R + Leica 50mm f/2 APO-Summicron-M ASPH