Olympus E.Zuiko Auto-T 135mm f/2.8 - Olympus OM Mount

The E.Zuiko 135mm f/2.8 is a fast telephoto prime for the Olympus OM system, offering a classic focal length for portraiture and sports. It features a five-element design and a built-in retractable lens hood. Despite its relatively wide maximum aperture, it remains remarkably compact compared to contemporary 135mm lenses, adhering to the OM system's design philosophy of portability without sacrificing optical speed. When sourcing a used 135mm f/2.8, the primary concern is the condition of the internal optics, specifically looking for fungus or haze which can affect older telephoto designs. The built-in hood should slide smoothly and stay in place when extended. SDS checks for oil on the aperture blades and ensures the focus ring operates without grit or uneven resistance. Also, check that the mount is secure and hasn't sustained impact damage.