Even though it is the smallest and lightest full-frame f/2.8 16-35 mm zoom in the world, the FE 16-35mm f/2.8 GM II delivers extraordinary image quality thanks to XA elements and Super ED glass (extra-low dispersion) in an advanced optical design. Lightweight high-thrust XD Linear Motors further contribute to a low overall weight of just 19.3 oz. (547 g) – about 20% lighter than FE 16-35mm f/2.8 GM. Overall length is a just 4.5 in. High spatial resolution results in detailed rendering of dynamic wide-angle scenes right out to the image edges throughout the 16-35 mm zoom range, even with the aperture wide open. Five aspherical elements include three XA (extreme aspherical) elements, and aberration is controlled for a superb blend of high resolution and gorgeous bokeh. Smooth, beautiful bokeh that can add depth to this remarkable lens’s outstanding resolution is made possible by a large f/2.8 maximum aperture, innovative optical design, and an advanced 11-blade aperture unit. Gorgeous circular bokeh can add extra appeal and expressive impact to a wide range of images. The FE 16-35mm f/2.8 GM II uses a floating focus mechanism that includes four original XD Linear Motors and precise lens control for up to approx. 2x2 faster AF speed. Continuous shooting at up to 30 fps is possible with Sony’s α1 camera. It reliably acquires focus and smoothly tracks subjects, easily achieving the critical focus required for slow motion and 4K/8K movies.