Leica APO-Summicron-M 50mm f/2 ASPH., black anodized | Leica Camera US
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
Leica 50mm Summarit-M f2.4 Lens Review
Leica 50mm f/2 Summicron Wetzlar Rigid M-Mount Lens, Black {E39} 11817 at KEH Camera