If you’re a deep-water explorer, this is your pick of the best waterproof digital cameras. The Nikon W300 is rated to depths of 30m, outstripping most waterproof cameras, and it comes with a barometer that provides useful underwater data like altitude and depth, as well as an electronic compass. Bluetooth functionality is also on board, and this pairs well with Nikon’s SnapBridge technology for fast image transfer. Video shooters will also welcome the addition of 4K video to the W300’s toolkit, and the generous shockproof rating of 2.4m means it’s extra protected against bumps and knocks. While the lack of Raw support is a pity, if you're happy to stick with JPEGs you'll find it to be a superb all-rounder for fearless underwater adventures.
The Canon G7X III is a tiny camera with a large 1-inch, 20 MP sensor, a direct competitor to the Sony RX100 series cameras. It is an excellent, fast-focusing camera with great image quality and has dedicated macro focus. The camera also boasts 4K video, slow motion video, a bigger image buffer, a new stacked sensor, a better image processor, and quicker burst shooting over the G7X II.
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Another highly sought-after, and relatively exclusive, feature within the video camera realm is the ability to record in RAW or ProRes. These are uncompressed formats that maximize the information gathered by the sensor and provide you with extended flexibility when it comes to color grading and post-processing. As mentioned, this feature is quite an exclusive one and only available in a select few cameras on the market with good processors (again, excluding high-end cinema systems). Some select cameras can record in ProRes Raw with an Atomos Ninja V external recorder. Nauticam offers a housing for the Ninja V for use with your underwater system.