MC Mir-20M 3.5/20 is an ultra wide angle fixed focal length lens for 35mm SLR cameras with M42 screw mount.
The basis of the optical design of the Mir-20 lens was taken from the Carl Zeiss Jena Flektogon 20mm f/2.8 lens. Made some changes to the schema.
General condition is very good.
There is a small damage on the front lens. But has no influence on the image quality.
The lens produces a sharp image, especially in the middle range, from an aperture of 3.5, and it is very sharp from an aperture of 5.6. The drop in resolution at the edges of the image is clearly noticeable.
The Mir-20 20mm f/3.
5 has almost no geometric distortions.
Color reproduction is bright and saturated. Slightly shifted towards warm tones.
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