Combining G Master performance with the lightest and smallest form factor in its class, Sony rounds out its trinity of f/2.8 G Master zoom lenses with its latest wide-angle offering for video and stills shooters, the FE 16-35mm f/2.8 GM II Lens, which boasts a variety of optical, focusing, and handling upgrades. Full-Frame | f/2.8 to f/22 Fast Wide-Angle Zoom 20% Lighter, 10% Smaller than Previous Four XD Linear AF Motors, Floating Focus Aperture De-Click and Lock Switches Zoom Smoothness Switch XA and Super ED Elements Fluorine Coating Dust and Moisture-Resistant Construction