Hi Sheila,
Just to follow up on my last post with a bit more detail. What I don't like about the photo quality of waterproof P&S cameras is the images usually look flat and dull. To my eye they lack depth and vividness. Someone explained to me why once - I forget the details but the gist was that because they have a solid shell the lens can't extend and retract so all the optics inside the camera need to be compressed.
The things that annoying me about my Canon: on P mode (not auto), it chooses what to focus on, which is often not what I want it to focus on. Oddly on Auto mode there is an option to control what the camera focuses on. This is a case of Canon trying to make the camera so user-friendly that it loses flexibility for taking more creative shots.
It has a number of pre-sets. Some are good, and some goofy (like toy camera effect and fishbowl effect). The sunset pre-set is very good, but as far as I can see it's only in Auto - so far I haven't found a way to manually put it in Sunset pre-set when it's in P mode.
Those quirks aside, some of the things I like about my camera: it has vivid colours, the macro is good, good depth and detail, fairly sharp, works in low light as good as can be expected from a hand help P&S.
Here's on on-the-water shots in different lighting conditions with the Canon:
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Here's a few pics showing what it can do with colours and macro:
And a landscape shot:
Sunset shot:
And a low light shot. The camera has low-light preset which takes 3 shots in rapid succession then makes a composite image out of them, sharper than a single shot could be.