The MC-14 from Olympus increases the focal length of the lens by 1.4 times, optimizing your photographic possibilities and providing you with more telephoto zoom in a compact 15 mm slim housing. With only one stop of light loss, the MC-14 delivers a fast super-telephoto experience when used with the M.Zuiko Digital ED 40-150mm PRO F2.8 and the M.Zuiko Digital ED 300mm F4 PRO. If you are engaged in sports photography as well as nature or wildlife photography, you will appreciate the high-quality metal housing that is dust and splash resistant. This teleconverter is multi-coated to maintain the high lens performance you expect from Olympus, ensuring you achieve the professional results you have always desired.