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Optical design
| Format: 35mm rangefinder
Type: Prime lens
Focusing: Manual Focus (MF)
Lens mounts: Leica M, M39 Leica screw-mount (LSM)
First year of production: 1951
Last year of production: 1969
Optical design: 7 elements in 4-х groups, 4 elements in 4-х groups.
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Specifications:
| Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr/oz) | Length (mm/in) |
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| 50mm | f/2.0 | f/16 | 10 | 1 | 39 | 220/7,8 | |
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Additional information:
The Ernst Leitz Wetzlar Summicron 50 mm f/ 2 is a wide-angle prime lens for 35 mm Leica rangefinder cameras.
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photos 1 and 4 - Collapsible version, Type 1 - 1953-1956 (or 1953-1960)
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photos 2 and 5 - Rigid version, Type 2- 1956-1968 (or 1957-1968)
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photos 3 and 6 - Dual Range version, Type 2 - 1956-1968 (or 1957-1968)
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Version 3 6/5 - 1969-1979
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Version 4 and 5 6/4 - 1979-1994 and 1994-2012
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АРО version 8/5 - 2012- Present
With the same 7/4 optical formula, the optical design of Type 1 is different from that of Type 2.
Links to online resources:
Posted by: Ugin242 Date of publication: 03.03.2013
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