Russar MR-2 military edition USLR mod. №950034 20mm f/5.6 LTM/LSM M39

This lens was designed and manufactured in my workshop from a military version of the Russar MP-2 lens. My goal was to make it as compact and discreet as possible for street photography. To achieve compactness, I combined the distance scale and aperture scale. When the red mark on the distance scale is set to 8, the lens focuses at infinity. When the red mark is set to 5, the lens focuses at 5 meters. With a full rotation of the lens relative to the red mark, the lens focuses at 0.1 m. The minimum focusing distance is 0.07 m. Please note that the focusing ring has no stop, so if the minimum focusing distance is exceeded, the lens will separate from the helicoid. The aperture is adjustable from f/5.6 to f/22.  Covers the full frame without vignette.