In the beginning of my divecareer I used "onetime" cameras when i was snorkeling. After a while me and my buddy received a Sealife Reefmaster camera from our very kind parents. We were very pleased and used it for the first time on our seccond trip to Malta. These pictures you can see if you click your way to The Mediterranean Sea.
We also used this camera on our trip we did to the Red Sea in the beginning of this year. You can also view those pictures, just go to the Red Sea section.
Quite recently we sold our Reefmaster and bought a little more professional camera, the MX-10 with the strobe and lenses (wide 20mm and macro). So far we've only used it a couple of times but already it shows much more flexibility and sharpness than what we were used too.

Sea & Sea MX-10 with YS-40A strobe

It's a 35mm camera with a maximum depth to 45m (150feet). The focal distance with the regular lens U/W is 1.2m(4feet) to infinity. Film speed, 100 or 400 ISO. The YS-40 strobe has a beam angle of 70 x 80 degrees. Recylce time is 5 sec with alkalines, 3 sec with ni-cads. Number of flashes - 100 with alkalines, 50 with ni-cads.