16 mm ultra-wide G Lens with a stunning blend of high resolution and beautiful bokeh at F1.8. Two AA (Advanced Aspherical) lens minimize field curvature and astigmatism for stunning resolution. Minimum focus distance: 0.15 m (0.5ft) (AF)/0.13 m (0.43ft) (MF). Compact and lightweight design of 304 g (10.8 oz.). Two XD linear motors for fast, precise, quiet autofocus that supports high-level imaging