The Aquatica Megadome Port is ideally suited for extreme wide-angle lenses when used in Aquatica housings, because of its large diameter of 9.25" (235mm). The dome's glass construction allows for quick shedding of water droplets, one of the prime concerns for over/under photos. Discriminating photographers will also appreciate the optical anti-reflection and scratch resistant coatings. The port is compatible with all lenses list on the port chart for the 8" dome.
The Aquatica Megadome is made of BK-7 mineral glass, ground and polished to perfection. This will maximize light transmission. The large radius of the Megadome will optimize your lens coverage, and allow your quality optics to shine underwater.