Not all cameras are suitable of for canyoning. One of the standard camera over the past few years has been the Olympus Stylus Tough. Now recently updated Olympus Stylus Tough TG-3 Camera. Designed for use in any conditions, the TG-3 is freezeproof to -10º, waterproof to 15 meters, shockproof to 1 meter, crushproof to 100kg., and dustproof.
Of course, it also shoots great photos due to a high-speed f2.0 lens, 16MP backlit CMOS sensor, and TruePic VII image processor, which are joined by 1080p Full HD video recording, a 3-inch LCD monitor, GPS, and built-in Wi-Fi for easy sharing once you’re out back in the real world.
More details are available from Olympus.