Lens · prime
Jupiter-9 85mm f/2
LZOS/KMZ · from 1948
Jupiter-9 85mm f/2 (SLR version): 7 elements in 3 groups, 15 aperture blades, 0.8m minimum focus, 49mm filter thread, 400g.
- Focal length
- 85mm
- Max aperture
- f/2
- Mount
- M42 Screw
- Format
- 35mm
- Elements / groups
- 7 / 3
Known for
- Portraits
- Events
- Available light
Considerations
- Single-layer coating on early examples
Optical characteristics
Silverlog's editorial rating: our own judgement, not measured data.
Bokeh: Legendary smooth - 15 curved blades
Rendering: Classic Sonnar look with smooth gradations
Colour: Warm, pleasing
Silverlog's editorial rating, 1 to 5; five is best. Not lab-measured.
Versions
Chrome/Zebra
1950-1975
Silver or zebra finish, preset aperture
Collectible, classic look
Black (MC)
1975-2005
All black; some later examples multi-coated
Better coatings, more practical
Derived from Carl Zeiss Sonnar designs (original calculation by Ludwig Bertele, recalculated by M. D. Maltsev at KMZ). First called ZK-85 (from 1948); the Jupiter-9 rangefinder versions were made 1951-1963 at KMZ. Also made at LZOS and Arsenal; SLR-version dates are not given by the source.
Common issues
- Aperture blade oil
- Focus ring wear
Buying guide
Count the aperture blades (15 is correct) and check for smooth, even aperture operation. Inspect coatings for damage.
Specifications
| Mount | M42 Screw |
| Focal Length | 85mm |
| Max Aperture | f/2 |
| Min Aperture | f/22 |
| Aperture Blades | 15 |
| Min Focus | 0.8m |
| Filter Size | 49mm |
| Weight | 400g |
Optical design
| Formula | Sonnar |
| Elements | 7 |
| Groups | 3 |
| Coating | Single Coated |
Pricing
- Typical used price
- £60 - £130
- Mint
- ~£180
Indicative, no dated source.