Leica Super-APO-Summicron-SL 21mm f/2 ASPH
Today, Leica has launched the long-awaited Super-APO-Summicron-SL 21mm f/2 ASPH super-wide-angle, fast prime lens. Joining the existing five APO-Summicron lenses ranging from 28 to 90mm, the new super wide ang...