AquaTech P-120 (example: Canon 16-35mm f2.8II / 16-40mm f4)

This product, the AquaTech Lens Port helps you to do so with a range of different camera lenses. The AquaTech Lens Port – P120 is compatible with a variety of lenses, including the Canon 16-35mm f/4 IS & Canon 16-35mm f/2.8 II wide-angle zoom lenses. Featuring a threaded system, this lens port is designed for use in conjunction with AquaTech camera housings, such as the Edge, Reflex, Evo, Elite, Compac, Base & Delphin models.