This teleconverter is specially designed for your M.Zuiko digital lens. The MC‑14 Teleconverter from OM SYSTEM increases the focal length of the lens by 1.4x, optimizing your photographic possibilities and giving you more telephoto zoom in a housing of only 15 mm. With just one aperture, the MC‑14, together with the M.Zuiko Digital ED 40‑150mm PRO F2.8 and M.Zuiko Digital ED 300mm F4 PRO, deliver a fast super-telephoto experience. If you are involved in sports and nature or wildlife photography, you will appreciate the high-quality metal housing that is dust and splash proof. This teleconverter is multi-coated to maintain the high lens performance you expect from Olympus & OM SYSTEM So you get the professional results you've always wanted.