Olympus M.Zuiko Digital 2x Teleconverter MC-20 Doubles the Master Lens’ Focal Length for Super Telephoto & Super Telephoto Macro Shooting: Portability, Dust/Splash/Freezeproof (-10°C), Compatible with M.Zuiko Digital ED 40-150mm F2.8 PRO, M.Zuiko Digital ED 300mm F4.0 IS PRO, and M.Zuiko Digital ED 150-400mm F4.5 TC1.25x IS PRO (Under Development) 2019-06-19