Overview

The Yashica DSB 24mm f/2.8 is a manual-focus prime for C/Y mount. Optically, it offers excellent sharpness, especially stopped down, and outstanding geometric distortion control, comparable to Zeiss. However, it suffers from significant vignetting wide open, only becoming acceptable at f/5.6, and corner performance is weaker than some competitors. Build quality is rated 4/5, optical quality 4/5, and overall lens rating 3.8/5. It suits users who prioritize sharpness and distortion correction and can manage vignetting, but may not be ideal for those needing strong corners wide open.