Overview

The Mamiya-Sekor 55mm f/2.8 is a compact, lightweight wide-angle lens for 645 format, offering a 35mm equivalent of 34-36mm. It is praised for sharpness, natural perspective, and minimal distortion. Wide open there is slight softness, but stopped down it is razor-sharp. Build quality varies: the 'N' version has cheaper construction, while the 'S' is more solid. The lens is affordable and suits group portraits, weddings, and general wide-angle work.