# Jupiter-9 85mm f/2

- Brand: LZOS / KMZ (USSR)
- Mount: M42
- Focal length: 85mm
- Max aperture: f/2
- Optics: 7 elements / 3 groups
- Min focus: 0.8 m
- Filter thread: 49mm
- Production: c. 1959-1990s

The Soviet Sonnar: a postwar continuation of the Zeiss 85/2 formula. Fifteen aperture blades and a portrait draw no modern lens repeats. Sample variation is the whole game; buy condition, not folklore.

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Source: ShutterFile (https://shutterfile.com/m42/jupiter-9-85-2/). Production dates are catalog-era approximations (c. = circa); independent reference, not affiliated with any manufacturer.