Canon 135mm f/2.5 SC Breech Lock Lens for FD-Mount Review

The Canon 135mm f/2.5 SC is a legacy FD-mount prime from Canon's breech-lock era, designed for older manual-focus film bodies. At 135mm, it sits in the classic portrait and short-telephoto range, offering a moderate f/2.5 aperture that balances light-gathering with size and weight. The SC (Spectra Coating) designation marks it as a single-coated lens from Canon's pre-SSC lineup, which means optical performance won't match modern standards for contrast or flare resistance but can still deliver usable results in controlled lighting.

This particular example is sold through KEH in excellent condition, though the front filter ring is noted as damaged. That's a common wear point on breech-lock lenses and may affect filter threading but typically won't impact image quality. At 44 dollars, it's an affordable entry point for shooters adapting FD glass to mirrorless cameras or looking to experiment with vintage glass. It requires an adapter for use on modern bodies, and manual focus only.