Olympus's classic OM short telephoto — the E.Zuiko Auto-T 135mm f/2.8, an affordable portrait lens.
The Olympus OM-System E.Zuiko Auto-T 135mm f/2.8 is a short telephoto for the Olympus OM mount, dating from 1972 and the launch of the OM-System. The E.Zuiko prefix is Olympus's element-count code and the Auto-T token marks it as an automatic-diaphragm telephoto. It was the standard fast 135mm in the range and a popular portrait and general telephoto for OM photographers.
This is a manual-focus Olympus OM lens with a 135mm focal length and a maximum aperture of f/2.8, designated E.Zuiko Auto-T. The E.Zuiko code places it in Olympus's element-lettering scheme. The dependable specifications are the 135mm focal length, the f/2.8 maximum aperture and the manual-focus OM mount; exact element count, filter thread and weight are omitted here rather than guessed.
A 135mm f/2.8 is a classic portrait and detail telephoto, offering a compressed perspective and pleasant background separation at moderate distance. It suits head-and-shoulders portraits, candid work and picking details out of a wider scene. The compact size typical of OM telephotos makes it easy to carry, and it remains a dependable, affordable choice within the system.
The 135mm f/2.8 was made in quantity, so used copies are common and among the more affordable OM telephotos. Check the glass for haze and fungus, which telephotos of this age can develop, and confirm the aperture blades are dry and clean. Test the focus ring for smooth even travel and the aperture ring for firm clicks. It adapts easily to mirrorless as an inexpensive, characterful short telephoto for portraits.