Overview

The Mamiya/Sekor ES 135mm f/2.8 Auto is a well-built all-metal M42 telephoto lens praised for excellent sharpness and contrast even wide open, with a curved focal plane causing soft corners at infinity. Bokeh can exhibit a pleasant swirl effect, but flare handling is a weakness. It delivers warm, characterful rendering ideal for portraits and video on modern mirrorless cameras via adapter. The lens is readily available at low cost, suiting enthusiasts seeking vintage character.