Canon PowerShot confusion

[mom_to_colin]

Hello, could you please help me decipher the difference between the Canon A and SD series?

I see that the Canon A700 and the SD630 are both recommended, but I can't determine the differences of the lines. I believe the SD (Elph) line is smaller and more compact?

Does this affect picture quality at all? I would prefer a smaller camera, but I recently returned an Olympus Stylus for horrible picture quality and am looking for something else.

I previously had an Olympus Camedia C-3000. Great pictures, love the camera, but large by today's standards. I don't mind it being a bit larger if that will mean better pictures. Thanks much! :-)

[Dirt Rider]

Youare correct, the SD line is a more compact line. I can't tellyou if it effects picture quality or not....Sorry.

[robbo]

The A series camera also use AA batteries. Some use two and others use four.