Tanar's fast fifties normal — the 1956 50mm f/1.5 in Leica Thread Mount.
The Tanar 50mm f/1.5 in Leica Thread Mount dates to 1956, made by Tanaka Kogaku for its screw-mount rangefinder system. It is a vintage Japanese fast normal from a smaller maker of the mid-1950s, sitting among the fast fifties produced for L39 bodies during that period.
It is a manual-focus rangefinder-coupled lens with a 50mm focal length and a maximum aperture of f/1.5. As a fast normal of its era it uses a large-aperture design and couples to the rangefinder for accurate focusing on screw-mount and adapted bodies.
At 50mm and f/1.5 the lens gives shallow depth of field and background separation for portraits and low-light work, with a softer wide-open look that firms up as it is stopped down. As a standard focal length it also serves for street and general shooting.
As a vintage lens from a small maker, used copies are less common and should be checked carefully for haze, fungus, cleaning marks, coating wear and element separation, along with focus feel and aperture oil. Confirm accurate rangefinder coupling. It adapts to Leica M with an LTM-to-M ring and to mirrorless cameras via an adapter.