G Master design combines extraordinary sharpness and smooth bokeh, Constant F2.8 max aperture maintains exposure and depth of field, Aspherical elements & 11-blade circular aperture for gorgeous bokeh, Class-leading min. focus distance of 37.8" / 0.25x max. mag., Dual floating focus system for high AF speed and precision, XA, ED/Super ED elements and Nano AR Coating for superb resolution, Min. focus breathing and parfocal design ideal for video, Direct coupled mechanical focus system for precise manual focus, Contestant lens length during focusing and zooming, High performance Optical SteadyShot Image stabilization, Dust and moisture resistant for robust reliability, Nano AR coating suppress reflections, flare and ghosting, XA (extreme aspherical) element with 0.01 micron surface precision, Super ED glass w/ multi‐coating reduces chromatic aberration, Convenient rotating and quick release removable tripod mount, Supports optional E-mount teleconverters(1.4x/2.0x),