If I were to go out to photograph surfers from in the water TODAY...
I'd grab two of my cameras to see which one would work better:
The first is my (35mm film) Nikon Nikonos V UW camera with the 35mm lens. This is an amphibious lens, so it will focus properly both above and below the water. I'd probably set it at f/8 and ~20ft (its a rangefinder, not an SLR) and the "A" (Auto) shutter speed. The camera should do okay in getting the proper exposure, although I'll listen for the shutter to see if it sounds like its too slow. I'd get the images digitized during developing.
FWIW, I've been doing UW photography with this camera for the past 15 years. Its a pretty compact & easy "snorkel" camera to use when I remove my
strobes and their arm assemblies.
The second camera would be an older Canon A80 P&S with the Canon housing. We've had the camera for a few years, but added the housing for a snorkeling trip last year - - found out pretty quickly that autofocus seeking in the surge and shutter lag make it a bit of a challenge ... frustratingly low yield.
If I were to go out to photograph surfers from in the water a month from now...
I've used Ike stuff (strobes, etc) for years ... an excellent company, so I'd have no hesitation with throwing my Canon 20D into a housing, since I could build upon that to make a decent scuba system tp augment my Nikonos.
But first I'd do some quick research as to what port/lens combinations I need to have, because it doesn't do much good to have a dramatically wrong lens/port combination. To this end, I'd try to find out what the guys are using in the photos that Andy is finding appealing to him, for if someone else has already figured out the right gear, that's half the battle.
However, I'd not disregard finding a good P&S with minimal lag and a good OEM housing, as this is likely to be a lot cheaper: if you're starting with nothing, the Ike housing, port, dSLR and lens is probably going to add up to around $3K.
If I were to go out to photograph surfers from in the water a year from now...
I'm hoping that a new, lower cost Full Frame version of the 5D is out, as that's what I'm waiting for to build up another UW system. Crop bodies are a bit problemmatic for wide angle.
Finally, lets not forget...
Video. UW Video housings these days are incredibly small and pretty inexpensive. You'll hopefully get a nice stream of images from which you can then pick out the best still, too. Again, you can look towards Ikelite as a source for good quality housings...and
dang tough, too
I am being tempted with the end of film to cross over to the "moving medium" for my UW work.
-hh