Recently, Olympus rolled out the latest version of its Tough camera, the Olympus Tough TG-4. This camera stands out among its competitors for offering RAW capture in an underwater compact camera at a reasonable price. We shot both the predecessor, the Olympus Tough TG-3 (our previous review here), and the new camera, the TG-4, on our recent trip to Antigua and Barbuda, to give you a real world, in-the-ocean test and comparison of the two cameras in action. With the exception of the addition of RAW capture, there is very little difference between the two models. They have the same sensor and the same lens. The both have built-in wireless…