Product Highlights: Full-Frame | f/2.8 to f/22 Fast Standard Zoom 22% Lighter, 18% Smaller than Previous Four XD Linear AF Motors, Floating Focus Aperture De-Click and Lock Switches Zoom Smoothness Switch XA and Super ED Elements Nano AR Coating II and Fluorine Coating Dust and Moisture-Resistant Construction Rounded 11-Blade Diaphragm