Jupiter-12 lens specifications:
Focal length: 35 mm.
Maximum aperture: f/2.8.
Minimum aperture: f/22.
Lens construction: 3 groups of 5 lenses.
Viewing angle: about 63 degrees.
Focal length for shooting at infinity: approximately 1 m.
Filter thread: 40.5 mm.
Bayonet mount: M39 (Leica Screw Mount).
Dimensions: approx. 61 mm (diameter) x 52 mm (length).
Weight: about 240g.
The Jupiter-12 1:2.8 lens had a mechanical focus and a manual aperture. It was intended for use with cameras equipped with the appropriate M39 mount. The lens has a classic design and vintage look that can attract the attention of collectors and photographers interested in vintage lenses.