Overview

The Mamiya-Sekor 55mm f/1.8 Auto is a 1970s all-metal lens offering outstanding optical quality for its price. It exhibits excellent edge quality, outstanding contrast, and very good astigmatic correction, with only slight curvature of field and negligible coma. The focus ring is stiff but precise, and the aperture ring clicks gently. It is non-radioactive, though other versions may be. Best suited for photographers seeking a characterful, affordable vintage standard lens for film or adapted to mirrorless digital.