Overview

The Mamiya-Sekor E 28 mm f/3.5 delivers very good center sharpness at all apertures, but corner sharpness is inferior to the SMC Pentax 28/3.5, especially wide open. Chromatic aberrations are less well controlled than the Pentax. Build and handling are not specifically discussed, but the lens handles direct sunlight reasonably well, with contrast loss affecting a larger area around the sun (caspert79). It suits users who prioritize center sharpness and can accept softer corners, or those on a budget seeking a compact wide-angle for general use.