Hi Wade,
Glad you like them! This is the first time I've ever entered any kind of photo contest, so it's nice to be appreciated... I'm flattered to make the finals!
Yes, I do use external strobes, two in fact. My setup for underwater photography is as follows:
Olympus C-5050
Light & Motion Tetra 5050 housing
2 Ikelite Substrobe MV strobes
Ultralight arms (3 joints on both sides, at camera, strobe, and elbow)
I try to use one strobe as a primary light and the other as a fill by varying their distance to the subject. Depending on distance, I'll sometimes use both equally to pump more light on the subject, or turn one away (at very close range for super macro stuff, using both strobes often results in overexposure).
If you're familiar with underwater gear, you've probably noticed my strobes are ancient. I used them with a previous film setup years ago before that camera was stolen, and when I decided to pick it up again and go digital, I had to decide between the deluxe housing and old strobes, or not-so-deluxe housing and new strobes. I chose the deluxe housing. If you're interested in the details of all that, I'll be glad to share.
- Todd