Had the most spectacular dive of my scuba diving career last weekend on the Big Island. Night Diving with Manta Rays! It was truly amazing. Tricky lighting conditions (Night Time, 60+ divers with lights). I had my strobes on, but the ambient light was the way to go, my best settings were at 1/60, f4.0 and an ISO of 800.
Here is just one of 100 that I thought were awesome, many, many more to come (very shortly). The video footage is even better. I did notice my super faithful Canon 5DII finally got a dead pixel. I must have 350,000 exposures and days of video shot on it, it was about time, but wow…what a great investment.