Sirus's obscure vintage telephoto — 80-200mm f/3.9 from a lesser-known lens brand.
The Sirus MC Zoom 80-200mm f/3.9 is a vintage telephoto zoom from the lesser-known Sirus brand — one of many budget third-party lens manufacturers that produced M42 and various SLR mount lenses in the 1980s.
Optically basic — typical of budget third-party telephoto zooms of the era. MC multi-coating provides some flare resistance. The f/3.9 is close to constant f/4 — unusual for consumer zooms. Manual focus.
Various SLR mounts depending on specific version. Manual focus and aperture. MC multi-coated. Metal construction typical of the era. The Sirus brand had limited market presence.
Available used for almost nothing. Sirus is an obscure brand with minimal collector interest. The optics are basic. Only useful at throwaway prices for casual vintage shooting or as a curiosity.