Format: 35mm rangefinder
Type: Prime lens
Focusing: Manual Focus (MF)
Lens mounts: Contax I-III (CRM), M39 Leica screw-mount (LSM)
First year of production: 1948
Optical scheme: 6 elements in 3 groups. Analog Carl Zeiss Sonnar 1:2/5 cm
| Optical scheme
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Specifications:
| Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr.) | Height (mm.) |
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| 50mm | f/2.0 | f/22 | 9 | 1 | 40.5 | 130 | 45 |
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