Other features include internal focusing, a ring type USM (Ultra Sonic Monitor), and new AF algorithms for fast and quiet autofocusing. What’s in the box: Canon EF 16-35mm f/2.8L II USM Autofocus Lens, 82mm Lens Cap, Lens Dust Cap E (Rear), EW-88 Lens Hood for 16-35mm f/2.8L II USM, Lens Case LP1319 and 1-Year Warranty.
https://www.amazon.com/Canon-16-35mm-2-8L-Zoom-Cameras/dp/B000NP46K2

