Molded of corrosion-free polycarbonate, this virtually indestructible heavy duty thick wall housing operates safely at depths up to 200 feet (60 meters). All functions of the camera except for the "Home" button are accessible through the housing. A flash diffuser is included to aid in improving lighting quality when the camera's built-in flash is used to illuminate subjects underwater. A flash deflector is also included for use with an external strobe. Optional color filters #6441.32 for tropical blue water and #6441.72 for green water settings provide color correction and more natural tones in sunny conditions up to 80 feet (24 meters). Either filter can be easily removed and replaced underwater. For use without a flash. An optional DS series strobe placed farther from the camera's lens improves the photographs by producing better coverage and reducing the illumination of particles in the water. A DS SubStrobe is brighter, recycles more quickly, and more natural color quality than the camera's built-in fl