Products

Leica introduced the 28mm f/2 Summicron-M ASPH in 2000, Michael Heiden's design placing nine elements in six groups with aspherical surfaces into a barrel of about 270 grams that focuses to 0.7m and takes E46 filters. Fewer than 5,500 were built through 2006. This is the first version, black anodised under order code 11604, from the later run carrying six-bit coding on the bayonet so digital M bodies identify the lens and apply the correct corrections automatically.