55mm · f/1.2
The Yashinon DS-M 55mm f/1.2 Tomioka Auto is a rare, collectible M42-mount lens known for its fast aperture and distinctive character. Optically, it produces creamy, smooth bokeh with a soft, dreamy look wide open, but corners are very soft and radial/tangential blur occurs. Build quality is solid, though later Cosina versions may use cheaper materials. It suits photographers seeking unique, vintage rendering for portraits or artistic shots, but not those needing sharpness across the frame.