50mm wide aperture Prime lens with ZEISS Planar design, Center to corner sharpness with outstanding resolution, Bright F1.4 maximum aperture with excellent low light performance,Lens Groups / Elements:9 / 12 ZEISS T* coating delivers superior contrast and resolution, 11-blade aperture and aspheric elements for gorgeous bokeh, 11-blade circular aperture for gorgeous bokeh 11-blade aperture and aspheric elements for smoothly defocused backgrounds, 12 Elements in 9 Groups with Advanced Aspheric and ED glass, Ring Drive SSM for fast, quiet and precise focusing Aperture ring with a selectable click ON/OFF switch, AF/MF switch for direct auto/manual focus control, Dust and moisture resistant for robust reliability

High-performance 50mm prime lens featuring a large F1.4 maximum aperture with outstanding contrast and resolution that are hallmarks of the ZEISS brand. The bright F1.4 maximum aperture offers excellent low light performance and adds to the 11-blade aperture and aspheric elements for gorgeous bokeh. 12 Elements in 9 Groups with two aspherical elements, including a high-precision AA (advanced aspherical) type and ED (Extra-low Dispersion) glass element, help maintain outstanding contrast and resolution right out to the image periphery. ZEISS T* coating delivers superior contrast and resolution.