Voigtlander's fast modern normal — the Cosina-made Nokton 50mm f/1.5 in Leica Thread Mount.
The Nokton 50mm f/1.5 is a modern Cosina-made Voigtlander standard lens, released in 1999 as the fast normal of the early Bessa screw-mount range. It is a contemporary manual-focus optic in Leica Thread Mount, not a vintage lens, and was conceived as an homage to classic fast fifties with modern coatings.
It is a manual-focus rangefinder-coupled lens with a 50mm focal length and a maximum aperture of f/1.5. The barrel is compact for a fast fifty, and the standard focal length is fully rangefinder-coupled for accurate focusing on screw-mount and adapted bodies.
At 50mm and f/1.5 it delivers shallow depth of field and soft background rendering for portraits and low-light work, with contrast and sharpness that build quickly as you stop down. It is a natural single standard lens for street and travel where a fast normal covers most situations.
As a newer Cosina-Voigtlander lens, used examples are usually clean and mechanically sound, with good availability on the used market; look for smooth focus, clear glass and an aperture that clicks positively rather than age defects. It adapts to Leica M with an LTM-to-M ring and to mirrorless cameras via a simple adapter for portraits and low-light shooting.