Leica 50mm f/2.0 APO-Summicron-M ASPH Lens - Black (with 6 Bit Code)
... is restricted to a mere 2 stops
at full aperture in 35mm format, equivalent to about 1 on Leica's M8 models, and stopping
down to f/2
.8 visibly minimizes this light deterioration ... development. With a compact body only slightly longer and heavier than the Summicron-M 1:2
/50mm, and with an almost identical diameter, this lens delivers noticeably superior image quality. In ...