Want to shoot split shots (half-in, half-out of the water) with your compact digital system? Wet lenses will increase your angle of view but create a difficult double water line when used at the surface. The answer is a 6" diameter dry dome which lengthens and smoothes the waterline yet remains compact and lightweight for travel.
Underwater, the dry dome increases your angle of coverage significantly compared to a flat port with less edge distortion compared to a wet lens.