Overview

The Minolta M-Rokkor 90mm f/4 (CLE) is a compact, well-built telephoto lens from the 1970s-80s, sharing optics with the Leica Elmar-C. It offers good center sharpness wide open, with corners improving at f/8, though field curvature may affect edges. Its small size and light weight (250g) make it ideal for rangefinder use, fitting easily in a bag. Weaknesses include light falloff (1.8 EV at f/4) and a minimum focus of 1.0m. It suits photographers prioritizing portability and unobtrusiveness over ultimate corner sharpness.