The Sony's FE 70-200mm f/2.8 GM OSS II takes the classic fast zoom and elevates performance to a whole new level. This lens builds upon the best parts of the original and makes them even better while simultaneously reducing weight by 29%—making this lens the lightest in its class.  A hallmark of the G Master line is the outstanding optical performance with both high sharpness and smooth bokeh. Using a new design, the FE 70-200mm f/2.8 GM OSS II promises corner-to-corner sharpness across the entire zoom range even when shooting wide open at f/2.8. Two ED (extra-low dispersion) and two Super ED elements, including one aspherical ED element, effectively suppress chromatic and spherical aberrations. Nano AR Coating II controls flare and ghosting with support from a new optical design that reduces internal reflections. Changes include a dramatic reduction of focus breathing and focus shift, improved autofocus performance, and a Linear Response MF system to ensure consistent, natural-feeling operation. Users will be able to de-click this ring at the flip of a switch for smooth iris control during shooting. This provides shooters with independent controls for focus, zoom, and iris. Among the biggest improvements with the 70-200mm II is a vastly superior autofocus system. An advanced Optical SteadyShot image stabilization system will ensure sharp images while shooting handheld at even the longest focal lengths. Being designed for professional use, the 70-200mm II has been ruggedized with advanced weather sealing. The focus range limiter switch will optimize performance and improve AF speed and responsiveness in certain shooting scenarios.