Canon's early fast FD tele — the 300mm f/2.8 S.S.C. with a fluorite element.
The Canon FD 300mm f/2.8 S.S.C. Fluorite was introduced in 1975 as a fast professional telephoto in the first FD generation, using a fluorite element to control chromatic aberration. It was one of Canon's early fluorite lenses and served sports and wildlife photographers needing a fast 300mm before the New FD L revision.
This is a manual-focus Canon FD lens with a fixed 300mm focal length and a fast maximum aperture of f/2.8. It carries Canon's Super Spectra Coating and incorporates a fluorite element to reduce secondary chromatic aberration at this focal length. It is a large tripod-collar telephoto with focus and aperture set manually.
A fast 300mm reaches distant subjects while its f/2.8 aperture allows high shutter speeds and strong background separation, making it suited to field sport, wildlife and other action at range. The fluorite element helps keep colour fringing low, giving clean rendering that the focal length and aperture demand.
On the used market this early fluorite 300 is a professional-grade telephoto valued by collectors and users. Inspect the large elements for haze, fungus, scratches and separation, confirm the aperture and focus operate smoothly, and check the tripod collar, built-in hood and any drop-in filter holder. It can be adapted to mirrorless via an optics-free FD adapter, though its size favours tripod use.