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Description
A super wide-angle short-focus, compact, interchangeable lens.
Mir-20M 3,5/20 Lens
MC Mir-20M 20mm f/3.5 Lens Specifications:
| Focal length, mm: |
20
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Relative aperture
- maximum:
- minimum: |
f/3.5
f/16 |
Angular field of view
(across a diagonal of a frame): |
96°
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| Number of elements/groups: |
9/8
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| Minimum taking distance, m: |
0.18
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| Light filters fitting thread: |
M 28x0.75
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| Dimensions (from a base face), mm: |
D 78x55
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| Weight, kg: |
0.39
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Adapter ring for Nikon with lens
For using Nikon cameras with M42 lenses (Praktica, Zenit). Set on the adapter high-quality lens Jolos let you compensate flange bases difference of all the M42 lenses completely. So focusing can be to infinity. It is actually for those who use wide-angle lenses (for example, Zenitar-M 2,8/16, Mir 20M and others). The high quality of the pictures is guaranteed.
You should remember that extension ring doesn’t work, diaphragm control is set manually. This adapter can work with lenses having both only automatic diaphragm (A) and selector A/M (automatic/manual diaphragm). It is possible to use Macro rings and other accessories. Approximate focal lengths: 50mm-1,5m; 85mm-3,5m; 135mm-6m.
Settings:
- Put red marks of the adapter and lens collar together.
- Turn the adapter clockwise till the fixative click.
- Set M42 lens.
Removing:
To remove the adapter you should unpress fixative pin and turn the adapter anticlockwise.
Note:
Working with M42 lenses acknowledgement of the focusing is not made. The aperture is not set. Expo-modes:
- P (program) – identical to Av mode;
- Tv (flash priority) – doesn’t work;
- Av (diaphragm priority) – works as usual;
- M (manual) – aperture and flash are changed. Inaccuracy of exposure defining is indicated by expo-correction.
See also: Adapter ring for Nikon | Nikon Lenses
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Users manuals
185 
