Overview

The Mamiya-Sekor E 28mm f/2.8 is a vintage wide-angle lens known for solid build quality, with a metal-and-glass construction and smooth focus ring. Optically, it delivers good center sharpness wide open but noticeable corner softness, improving when stopped down; however, it is outperformed in corners and chromatic aberration correction by the SMC Pentax 28/3.5. It handles direct sunlight reasonably well with moderate contrast loss. The lens is compact, well-balanced, and suits photographers who appreciate manual focusing and characterful rendering for street, documentary, or cinematic use on mirrorless bodies via adapters.