Product picture - Aquatica 48708 Zoom Gear for Canon 16-35mm f 2.8 L II USM & 17-40mm f 4L USM in Lens Port on Underwater Housing Aquatica, 48708, Zoom, Gear, Canon, 16-35mm, f, 2.8, L, II, USM, &, 17-40mm, f, 4L, USM, Lens, Port, on, Underwater, Housing Click the image to close this page