The Sony FE 24mm f/1.4 GM Lens features an advanced optical design, including two XA (Extreme Aspherical) elementsand three ED (Extra-low Dispersion) glass elementsthat delivering outstanding corner-to-corner resolution,even at a wide F1.4 aperture. An11-blade circular aperture mechanism creates beautiful bokeh that is a hallmark of the G Master series. Fast focusing is attained through the DDSSM (Direct Drive SSM) focus drive system.This lens sports class-leading size and weight, providing great handling and mobility.