Overview

The Canon FD 135mm f/3.5 S.C. (I) is a budget-friendly telephoto lens praised for its sharpness, lightweight build, and integrated lens hood. Optical strengths include good center sharpness wide open and excellent across-the-frame sharpness from f/5.6 to f/16, with low vignetting and chromatic aberration. Weaknesses include modest bokeh with abrupt edges and contrast loss in out-of-focus areas, and a maximum aperture of f/3.5 limiting low-light use. Build quality is solid metal and plastic, though the aperture ring can be awkward. It suits budget-conscious photographers needing a lightweight, sharp 135mm for daylight portraits, travel, or architecture.