Wide F1.8 maximum aperture enables beautiful defocusing effects.
9-Blade circular aperture creates beautiful round defocused bokeh.
ED glass element for corner-to-corner sharpness.
Double Linear motor system for fast, quiet and precise focusing.
The maximum magnification ratio is 0.13.
Direct control w/ customizable focus hold button and AF/MF switch.35 mm equivalent focal length (APS-C):127.5.