Ikelite Underwater Action Housing for Sony Cyber-Shot RX100 or RX100 II Camera

Ikelite new line of Action Housings are designed with water sports and travel in mind: built tough yet compact and lightweight. And you don't have to stay near the surface of the water... each housing boasts a professional scuba and free diving depth rating of 200 feet (60m). Compact Action Housings are also perfect for the outdoor adventurer. A hard cased housing provides both protection and functionality way beyond the plastic bag alternative. And unlike a traditional dive housing, the compact Action Housing won't add excessive bulk to your backpack.

Access to important camera functions including the menu and manual white balance. Functions are clearly engraved with the same symbols that are on the camera. Engraved markings will never fade or fall off
The scratch-resistant glass lens port provides full use of the camera's zoom range without vignetting. The front of the port accepts press-on color correcting filters and is 67mm threaded for the attachment of optional accessories
A custom ABS-PC blend housing with acetyl controls provides strength, UV protection and fundamentally corrosion-free performance
A central 1/4-20 tripod mount on the bottom of the housing is the perfect attachment point for stabilizing trays and constant-on lighting
Made in the USA and individually tested for fit, function and waterproof integrity

Lighting
If you're diving below about 60ft/18m or at night, they recommend adding a light to help your camera focus and boost the colors in your photos and video. In underwater lighting, brighter is better. Look for a light with a high lumens rating and a very wide, even beam. The camera's built in flash cannot be used inside of the housing.

Wide angle, macro + filters
Their 3-inch diameter ports feature a 67mm thread on the front for the easy attachment of external wide angle and macro wet lenses. Wide angle lenses make objects appear smaller, so that you can fit more into your frame underwater. Macro close-up lenses make small objects appear larger, so that tiny creatures will fill your frame.

The WD-3 Wide Angle Dome provides mid-range angle of view with no vignetting (dark shadows in the corners of the image). The W-30 Wide Angle Lens, INON UWL-H100 and other 67mm threaded wide angle lenses, provide a wider maximum angle of view. Because these are separated from the camera's lens by glass, air and water, some vignetting and edge distortion will be present. These effects can be reduced or eliminated by using a smaller aperture, zooming in slightly, and/or cropping in post-production.