Yashica 50mm F/1.9 DSB C/Y Mount Lens Review

The Yashica 50mm F/1.9 DSB is a vintage manual-focus lens designed for Contax/Yashica (C/Y) mount cameras. At $25, it represents one of the more affordable entry points into classic glass, though as a used lens it requires an adapter for modern mirrorless systems. The F/1.9 maximum aperture offers solid low-light capability and background separation, making it a practical option for portrait and everyday shooting.

This lens is sold through KEH in conditions ranging from bargain to excellent, so image quality and mechanical feel will vary by copy. The DSB (double-sided beam) coating was Yashica's mid-tier optic treatment, delivering decent contrast and color rendition for its era. Build quality is all-metal, typical of 1970s and 1980s manual lenses, with a smooth focus throw and a 52mm filter thread. Autofocus shooters should note that this is fully manual, and vignetting or edge softness wide open is common with older designs like this.