Overview

The Minolta AF 20mm f/2.8 RS is a well-built, compact ultrawide prime for full-frame A-mount cameras, with metal construction and a 72mm filter thread. Optically, it delivers good center sharpness and pleasant colors/contrast, though wide-open performance shows softness and vignetting that improve by f/5.6. Autofocus is competent but noisy, and the lens lacks stabilization. It suits photographers seeking a film-era rendering and a fast ultrawide for landscapes or low-light, but may not satisfy those needing corner-to-corner sharpness.