Overview

The Canon FD 135mm f/2.5 S.C. is a vintage manual-focus lens with sturdy metal construction and smooth focus and aperture rings, though its breech mount can be fiddly. Optically, it shows no distortion, well-controlled vignetting (max ~1.4EV at f/2.5, gone by f/5.6), and good resolution on high-megapixel sensors. Its single coating may cause flare. It suits photographers seeking a vintage feel and willing to adapt to mirrorless cameras, as infinity focus is problematic on Canon DSLRs.