Amazon.com : Olympus V321210BW000 M.Zuiko Digital 1.4X Teleconverter MC‑14 for M.Zuiko Digital ED 40‑150 mm PRO F2.8 Lens & M.Zuiko Digital ED 300 mm F4 PRO Lens, Black : Electronics
Olympus ED 40-150mm f/2.8 Pro and MC-14 Teleconverter – First impressions, images and video samples