Vivitar's wide-angle — the MC 28mm f/2.8 with multi-coating for various mounts.
The Vivitar MC 28mm f/2.8 is a wide-angle prime from Vivitar with multi-coating (MC). Vivitar lenses were OEM-manufactured by various Japanese companies — quality varies. The MC coating improves contrast over non-MC versions. At 28mm f/2.8, standard wide-angle specification. Mount not specified — Vivitar produced for all major mounts.
Quality depends on OEM manufacturer — check serial number prefix. The MC coating provides improved contrast. The 28mm f/2.8 is a standard wide-angle specification. Some Vivitar 28mm f/2.8 lenses are very good (Komine, Tokina OEM). Build quality varies. The MC coating is a genuine quality indicator above non-MC versions.
Mount not specified — verify. Vivitar produced for Canon FD, Nikon F, Pentax K, Olympus OM, Minolta, and other systems. Filter thread varies. Weight varies. Quality depends on OEM. The MC coating is a genuine improvement. Check serial number for manufacturer identification.
Very cheap. Verify mount and check OEM via serial number. Quality varies dramatically by manufacturer. The MC coating adds genuine value. Some OEM versions are excellent — Komine and Tokina particularly. A potential bargain if from a quality OEM manufacturer. Verify before relying on.