OM SYSTEM M.Zuiko Digital ED 20mm f/1.4 PRO Lens Micro Four Thirds System, 40mm (35mm Equivalent), Aperture Range: f/1.4 to f/16, 11 Elements in 10 Groups, 1 Super ED, 3 ED, 2 Super HR Elements, 2 Aspherical Elements, ZERO Zuiko Extra-Low Reflection...