OM System M.Zuiko Digital MC-14 1.4x Teleconverter

The MC-14 sits between body and lens and multiplies focal length by 1.4x, turning the 40-150mm F2.8 PRO into a 56-210mm F4.0 and the 300mm F4.0 IS PRO into a 420mm F5.6. Optically it is designed against those specific lenses rather than as a generic converter, which is why the results hold up at full aperture where third-party converters do not.

It weighs 105g, uses a metal mount at both ends and is IPX1 weather-sealed to match the PRO lenses it fits. Supported on the 40-150mm F2.8 PRO, 300mm F4.0 IS PRO, 150-400mm F4.5 TC1.25X IS PRO, 90mm F3.5 Macro IS PRO, 100-400mm F5.0-6.3 and IS II, and 150-600mm F5.0-6.3 IS.