Olympus's classic 200mm telephoto for the OM system — the compact Auto-T with Zuiko quality.
The Olympus Zuiko 200mm f/4 Auto-T is a telephoto prime from the Olympus OM mount system. At 200mm f/4, it provides useful telephoto reach in the compact OM system design philosophy. The Auto-T designation indicates automatic diaphragm operation — the aperture stays wide open for bright viewfinder focusing and stops down automatically when the shutter fires.
Optical performance is good. Sharpness is very good from f/4 and excellent stopped down. The 200mm focal length provides useful reach for sports, wildlife, and portraits from a distance. Colour rendition has the warm, pleasant Zuiko character. Contrast benefits from Olympus's multi-coating. A reliable, well-corrected telephoto that delivers consistent results.
Olympus OM mount, manual focus. Filter thread is 55mm — compact for a 200mm lens. Weight is approximately 460 grams — remarkably light, reflecting the OM system's emphasis on portability. Build quality is excellent with precision metal construction. Several versions exist with minor optical improvements. Compatible with all OM-mount cameras and mirrorless adapters.
Common and affordable on the used market. Check for haze, fungus, and smooth focus operation. The compact size and light weight make it pleasant to use for extended periods. Adapts well to mirrorless — on Micro Four Thirds it becomes a 400mm f/4 equivalent, which is extraordinary. A solid vintage telephoto at a budget price.