- Technical Specs
More than 30 years after the launch of Summicron-M 1:2/50 mm, which is still available, the Leica APO Summicron-M 1:2/50 mm ASPH. represents a totally new development. With its compact body - only marginally longer and slightly heavier than the Summicron-M 1:2/50 mm, and with an almost identical diameter, it provides visibly higher image quality.
On the Leica APO Summicron-M 1:2/50 mm ASPH. the exceptional correction enables all aberrations to be reduced to a minimum level that is negligible in digital photography. Its key features include excellent contrast rendition, all the way to the corners of the image, even with a fully open aperture. The use of a "floating element" ensures that this is retained, even for close-up shots.
|Field Angle||for 35 mm and M9 (24 x 36 mm): 47°, 40°, 27°; for digital M8 (18 x 27 mm): 36°, 30°, 20°, corresponds approx. to a focal length of approx. 67 mm with 35 mm-format|
|Optical Design, Number of Lenses/Groups||8 / 5|
|Distance Setting, Smallest Object Field||271 x 407 mm|
|Aperture Setting/ Function||With click-stops, half values available, manual diaphragm|
|Bayonet/ Sensor Format||Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models|
|Filter Mount||Non-rotating, internal thread for screw-on filters size E 39|
|Largest Diameter||approx. 53 mm|
|Focusing Range||0.7 m to infinity|
|Lens Hood||Built-in, extendable by rotating|