Amazon.com : Fotodiox Lens Hood Replacement for EW-83E Compatible with Canon EF 16-35mm f/2.8L and Other Canon Wide Angle Lens : Camera Lens Hoods : Electronics
Amazon.com : Haoge Bayonet Lens Hood for Canon EF-S 10-22mm f3.5-4.5 USM, Canon EF 16-35mm f2.8L USM and Canon EF 17-40mm f4L USM Lens Replaces Canon EW-83E : Electronics