Hello, I have used many different types of cameras through the years of my diving career and have found the cheaper cameras to be very limited in the ability to take good pictures.
No matter what camera you choice, you MUST use an external flash. If you are a certified scuba diver you already know the reason for this. YOU should know, it's part of your training. This flash unit puts out just enough light for the intented purpose of the line of Reefmaster cameras. I would recommend renting a camera system before purchasing; make sure this camera system and flash unit meet your expectations.