I now use a Hero4 Black after flooding my 3+ at the end of last summer (never was able to diagnose why the 3 flooded). Anyway, my set-up is as follows: Hero4 Black + monitor, dual SOLA 2100 lights, Snake River Prototyping tray with loclite arms, Joby gorilla tripod, Backscatter flip system and filters (magenta for local NE US and red for clear water), Backscatter macrmate mini macro lens.
Here are some of my better still shots from the past year. These were all pulled from video footage, showing that decent quality photos are possible while simply shooting video:
New England USA - lobster -
New England USA - frilled anemone:
New England USA - more lobster
Coconut Octopus - Lembeh Straight, Indonesia:
Turtle - Raja Ampat, Indonesia
Nudibranch - Raja Ampat, Indonesia:
Mantis Shrimp - Raja Ampat, Indonesia
donesia: