Premium G Master Series wide-angle zoom lens and smooth bokeh Two XA (extreme aspherical) elements for outstanding resolution Circular 11-blade aperture for beautiful defocus effects Sony Nano AR Coating to eliminate flare and ghosting Dust and moisture-resistant design Minimum Focus Distance0.92 ft (0.28 m)Maximum Magnification ratio (x)0.62Filter Diameter (mm)82Weight24 oz (680 g)