Sigma's vintage fast telephoto zoom for Canon FD — the 80-200mm f/3.5 with constant aperture.
The Sigma 80-200mm f/3.5 is a vintage telephoto zoom for Canon FD mount with a constant f/3.5 aperture. The constant aperture was a professional feature in the film era — faster than typical f/4-5.6 variable alternatives. A decent third-party telephoto zoom for the Canon FD system.
Optical performance is decent for the era. Sharpness is respectable when stopped down. The constant f/3.5 provides one-stop advantage over f/4.5 competitors and consistent exposure. Build quality is solid metal typical of the era. Manual focus. Suitable for portraits and casual telephoto work on Canon FD film cameras.
Canon FD mount, manual focus. Filter thread varies. Weight is approximately 600 grams. Build quality is solid vintage metal. The constant f/3.5 across 80-200mm was competitive for the era. Adapts to mirrorless via FD adapters with infinity focus. The FD mount system is discontinued.
Very cheap. Check smooth zoom and focus. A decent vintage telephoto with constant aperture. Only for FD system users or mirrorless adapters. The constant f/3.5 is the distinguishing feature over variable alternatives.