Voigtlander 50mm f/1.2 Leica M ASPH Sharp Compact Beautiful Bokeh
Leica 50mm APO-Summicron-M ASPH f/2.0 review, sampel photos and interview with the lens designer Peter Karbe - Thorsten Overgaard's Leica Photography Pages
Lens comparison test between the 50mm f2 Elcan Replica and Leitz 50mm f2 Summicron DR — The Codex
Leica Summilux-M 50mm f/1.4 ASPH. Lens 11688 B&H Photo Video
Leica 50mm f/2 Summicron Wetzlar Rigid M-Mount Lens, Germany, Black {E39} 11817 at KEH Camera