Specification

ManualsBrandsLeica ManualsLensesSummicron-M 50mm f/2 Lens

LEICA SUMMICRON-M 50 mm f/2

The optical computation of this lens leads to perfect image quality that extends into the corners at full aperture, with outstanding

contrast over the entire picture area, even in the close-up range. Stopping down to f/2.8 or f/4 brings only a minimal increase in

contrast. Distortion is extremely low and practically undetectable. The ideal lens for all photographers who want a high-performan-

ce tool that weighs very little and is compact in size.

Lens shape

Summary of content (7 pages)

PAGE 1
LEICA SUMMICRON-M 50 mm f/2 The optical computation of this lens leads to perfect image quality that extends into the corners at full aperture, with outstanding contrast over the entire picture area, even in the close-up range. Stopping down to f/2.8 or f/4 brings only a minimal increase in contrast. Distortion is extremely low and practically undetectable. The ideal lens for all photographers who want a high-performance tool that weighs very little and is compact in size.
PAGE 2
LEICA SUMMICRON-M 50 mm f/2 Engineering drawing Technical Data Angle of view (diagonal, horizontal, vertical) Optical design 47°, 40°, 27° Number of elements / groups: 6 / 4 Focal length: 52.3 mm Entrance pupil: 25.1 mm (related to the first lens surface in light direction) Focusing range: 0.7 m to Infinity Distance setting Scale: combined meter/feet-increments Smallest object field: 277 mm x 416 mm Highest reproduction ratio: 1:11.
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LEICA SUMMICRON-M 50 mm f/2 3 MTF graphs 100 Aperture Stop 2.0 [%] 100 80 80 60 60 40 40 20 20 0 100 0 5 10 15 20 Y'[mm] 0 Aperture Stop 5.6 [%] 0 5 10 15 Aperture Stop 2.8 [%] The MTF is indicated both at full aperture and at f/5.6 at long taking distances (infinity). Shown is the contrast in percentage for 5, 10, 20 and 40 lp/mm accross the height of the 35 mm film format, for tangential (dotted line) and sagittal (solid line) structures, in white light.
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LEICA SUMMICRON-M 50 mm f/2 4 Distortion 5 4 3 2 1 0 -1 -2 -3 -4 -5 Effective Distortion Relative Distortion [%] Y'[mm] 12 9 6 3 0 5 10 15 0 20 Y'[mm] 0 3 6 9 12 15 18 X'[mm] Vignetting 100 [%] 5.6 2.8 2.0 80 60 40 Vignetting is a continous decrease of the illumination to the edges of the image field. The graph shows the percentage lost of illumination over the image height. 100% means no vignetting.
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LEICA SUMMICRON-M 50 mm f/2 Depth of field table ! " #" ! " #" !$ ! " #" !$ ! ! % &' ! % &' 5
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LEICA SUMMICRON-M 50 mm f/2 ! " #" !$ ! " #" !$ ! " #" !$ ! % &' ! % &' ! % &' 6
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LEICA SUMMICRON-M 50 mm f/2 ! " #" !$ ! " #" !$ ! % &' ! % &' Leica Camera AG / Oskar-Barnack-Straße 11 / D-35606 Solms / Telefon + 49 (0) 6442-208-0 / Telefax + 49 (0) 6442-208-333 www.leica-camera.com / info@leica-camera.