CANON EF 16-35MM F/2.8L III USM

Key Features EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 Three Aspherical and Two UD Elements SWC, Air Sphere, and Fluorine Coatings Ring-Type Ultrasonic Motor AF System Weather-Sealed Construction Rounded 9-Blade Diaphragm