There are three things that make the RX100 series one of the best underwater camera. First, their 1-inch sensor size is larger than most other compact cameras besids the G7X II, giving better image quality and better low-light performance due to a larger pixel size. Second, the auto-focus speed is faster than traditional compact cameras. Last, but not least, is its advanced video features, including 4K video.
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.
professional underwater camera