Here's the camera equipment that goes down with me Plus, I often add an underwater video camera. So, I often dive with 2 or 3 cameras I may not look pretty and out of the water I'm pretty ungainly, but once I'm in the water this gear is really easy to handle.
The carabiner clips allow me to strap on the cameras and still keep my hands free to use other equipment and navigate. BTW, I never shoot anything except with a camera. The fish are my friends.
What's stacked here are two Nikonos 5 underwater cameras with strobes (a 20mm wide angle lens and a 35mm normal lens), a close-up kit so that I can shoot really small fish and my two dive computers. It's about 8-10 extra pounds going into the water.
NOTE: It's not a far reach from taking pictures of products in Taiwan to taking pictures of Lion Fish underwater in the Red Sea. The fish move, the products don't. Diving photography can be a bit more challenging.