The Olympus Zuiko 28-48mm F/4 2-Touch OM Mount Manual Focus Lens is a vintage lens manufactured in the 1980s by Olympus. This lens is designed for Olympus cameras and features a maximum aperture of f/4, a focal length range of 28-48mm, and manual focus capabilities. The lens is made with plastic exterior material and comes with a manufacturer warranty of 3 months. With a zoom focal length type and compatibility with 49mm filters, this Olympus Zuiko lens is a high-quality unit crafted in Japan.