
All the major brands. Well all the consumer ones. I sell them. As industry member I have to be careful. Lots of tip toeing required....I have used them all extensively.
Favorite camera to play with at the moment is the 5D MIII and 50D because of the ML hack and they produce stunning results.
Camera for work will depend on production. Usually red Epic and sometimes the Alexa. With the Sony F55 now available more client want to use that too.
Lighting varies. The director and DOP decides. Pool shoot usually with Arri Max 18k and dinos....thats all for work of course. Rented. Top side lighting provide light for the pool for simulating the sun UW. In water no UW light needed. Some DOPs don't like LEDs as the light is not diffused enough.
Just for fun I use the Panasonic GH2 with the Driftwood firmware a few years. I sold that camera recently. Now just the 5D and 50D with the BMDC on the way. Shooting raw is really the way to go. In the sea I take Sola 4000. about six of them. The light has good beam and colour okay. warmish. Battery charge is the achillies heel. So need to bring some spare lights. Recently I used the Keldan CRI and flux. Actually I couldn't tell the difference in colour temp between the two until I test it with a colour chart and shoot with the 36MP D800 and enlarge the slate. Side by side you can tell at 100 crop. For normal shoot the Flux is great for power. I also have the Aqua volt. Funny looking battery and was stopped once by airport check point. Probably thought I was carrying a nuclear bomb detonator. The light pumps out humongous amount of light. Almost as much as Gates VL 24. I am waiting to see what they come up with next.
I also make my own UW lighting panels with topside LV DC supply. Its an array of daylight LEDs of a 1 foot by 3 feet panel for even lighting. These are great for shooting UW models and products. I don't do all of it myself of course. I work with lots of talented people.
So I really have no favorites. They are just tools.