Overview

The Pentax smc D-FA 50mm F2.8 Macro is a compact, lightweight full-frame macro lens with superb center-to-edge sharpness from f/2.8, peaking at f/4. Chromatic aberrations and distortion are negligible, and bokeh is smooth in the transition zone, though highlight discs become polygonal quickly. Build quality feels cheap with a wobbly extending barrel, and autofocus is slow, noisy, and prone to hunting due to the screw-drive system. It suits macro enthusiasts who prioritize optical quality over handling speed and can work with the short working distance at 1:1.