I have the A70 and find it takes great pictures underwater. I compared it to a number of other cameras and the features I bougth it for weren't available on other cameras at the price point. The newly released A80 moves you up to 4mp.
For a MSRP of $299 (cheaper if you shop the price) you get:
- 3.2 mp
- longer focal length has a 3X optical zoom versus 2X on others
- more creative control with aperature and shutter priority modes
- full manual mode
- faster shutter speed
- faster shooting speed
- ability to shot short video clips with sound
- more metering options
- uses cheaper CompactFlash memory
- the A70 takes additional lenses - telephoto, wide angle, macro
- the A70 accepts easily obtainable NiMH rechargable AA baterries - this gives the camera a little more bulk with the battery enclosure, but I think this allows a better grip and steadier shots
Check out the
Canon site for additional info and comparison between the different Canon models.
The Canon WP-DC700 housing I bought has 40m/130 ft printed on the case, though I have read reports of some taking it deeper without a problem. The best place to buy the housing right now is Walmart.com. They are selling this housing for $184 including tax and shipping.
Check
this link and
this link for pictures I've taken with the camera. Some are better than others, but I put that down to the users artistic ability, not the cameras.
Marc