Here's the rub with housings for digital cameras. You need to choose the camera first then buy a housing MADE for the camera.
I have a Nikon D70 and the Sea & Sea housing for it. All together I paid about $5,000.00. It weighs about 35 pounds on land but is neutrally buoyant in the water. I used it about five times and put it on the shelf. I was told, while in Bonaire at a shoot out this summer, that I could maybe get a couple of hundred dollars for the housing as the D70 is OUTDATED!
I would rather add it to my Nikonos III, IV and V with all their attended strobes, arms and connocters on my museum shelf than take a "few hundred dollars" for it.

Almost the same with my u/w video; Sony PC 120 with a Light & Motion Mako housing. The LCD screen went out after about 3 years. When I sent it in for repairs I was told they no longer make that model and did not stock parts for it. I love the camera and the housing and basically point and shoot and way too many times find that I have shot too high. AARGH! Of course, in Bonaire they told me it was "time to move up" pushing High Definition which means High dollar amount.

Unless you want to get into serious underwater photography get simple stuff.

Just remember, as was already said, GET CLOSE. If possible GET DOWN (below the critter) and SHOOT UP. Most of them are designed to blend in with their backgounds so you need to do the above in order to have them stand out. The other thing is that a strobe light will only carry five feet under water. Again, you need lots of sun light penetrating the water. All this takes either good buoyancy control (if you are on SCUBA) or good breath holding if you are free diving.

But, as I have said before, I have seen some incredible pictures taken by armatures with cheap outfits.


Harriette
Take only pictures leave only bubbles