Canon's budget FD telephoto — the 135mm f/3.5 with S.C. coating for basic telephoto use.
The Canon FD 135mm f/3.5 SC is a telephoto prime from Canon's FD film SLR era with SC (Spectra Coating) — Canon's standard single-layer or early multi-layer coating that preceded the superior S.S.C. (Super Spectra Coating) system. It covers the classic portrait telephoto to short telephoto range.
The lens delivers 135mm at f/3.5 maximum aperture with Canon FD bayonet mount, fully manual focus and aperture, SC optical coating, and full-frame 35mm coverage. The 135mm focal length was a popular portrait and short telephoto choice in the film era for its combination of natural compression and working distance.
The FD 135mm f/3.5 SC is one of the most common FD-era telephoto primes in the used market and is frequently adapted to modern mirrorless systems. The SC coating is less effective at flare control than the later SSC version, making it more susceptible to ghosting in backlit conditions. However, at typical portrait shooting angles the optical performance is competitive.
Inspect the SC-coated elements for any damage — SC coating is more fragile than S.S.C. and prone to scratching. Check aperture blades for oil contamination. Test focus ring for smooth travel. Verify FD bayonet coupling engages securely. For adapted mirrorless use, confirm a compatible FD-to-X adapter is available.