Overview

The Yashinon DS-M 135mm f/2.8 is a vintage M42 lens praised for its build quality, described as 'absolutely stunning' with a smooth focus ring and deep integrated hood. Optically, it delivers tack-sharp center wide open, with corners sharpening by f/5.6; bokeh is smooth at all apertures. Weaknesses include poor flare handling due to simple coatings and a frustrating aperture window that requires removing the eye from the viewfinder. It suits portrait photographers who appreciate classic rendering and robust construction, though its rarity and price (~$120) may steer performance-focused users toward Takumars.