Shootout: Four 50mm Rangefinder Lenses on the Sony A7R
In Guide to Leica is published a 50mm 4-lens shootout on the Sony A7R.
These 50mm lenses are Leica M-mount rangefinder lenses, and such lenses stick to the appropriate guide, regardless of the camera body used (in this case Guide to Leica).
The Sony 55mm f/1.8 Sonnar will be covered soon in Guide to Mirrorless;
Based on the superb performance of the Sony Zeiss FE 35mm f/2.8 Sonnar, I actually expect the Sony FE Zeiss 55/1.8 Sonnar to perform as well or better as any of these rangefinder lenses. I stand to be corrected by actual performance, but lenses designed from a clean slate for a mirrorless camera have a big advantage.