Please help me to choose one of them,without consideration on price... By now I've done image comparisons on these two cameras a number of times. While "IS" is a valuable feature, the image quality of the A640 simply blows the A710IS away.
I own a few Nikon DSLR's and I'd buy the Canon Powershot A630 or A640 for myself. These cameras have the larger sensor (1/1.8" or 5.2 mm x 7.2 mm) that is nearly double the sensor size you find in many point and shoot cameras and this translates into better image quality. They allow fully automatic use or total user control and offer several stages in between. The only significant difference between these cameras is that the A630 is 8 MP and the A640 is 10 MP.
If you're going to spend up to $200, look at a Canon Powershot A630. My brother has had his A630 for over a year and it's a very nice camera. You can get it at B&H Photo (available through Yahoo! Shopping) for $184.
If you can go to $300, look at the 10 MP Canon Powershot A640. This is an excellent camera. It sells for $260 and you can add a very nice memory card for under $40. The images from the A640 compare VERY favorably with the images from a Canon G7, which costs about twice as much.
For either camera, buy a 1 or 2 GB Sandisk Ultra II or Extreme III card. You will NEED the increased capacity and write speed to fully realize the benefits of your camera. The Ultra II would be excellent, but if you are really into video, you might prefer the faster Extreme III. These cards cost from about $25-45 at B&H and several other outlets.
A630: http://www.steves-digicams.com/2006_revi...
Also: http://www.dpreview.com/reviews/specs/Ca... (Read owner opinions)
A640: http://www.steves-digicams.com/2006_revi...
Also: http://www.dpreview.com/reviews/canona64... Thanks. Good luck shopping! Report It
I would go for t he A640
But before you buy, why don't go go to.
http://www.pbase.com/cameras/canon/power...
Do a search on camera Canon and then Model and see what
everyday people like you and me are taking and the results
Then pick the camera that the pictures look the best.. Personally, I'd go with the A710IS or A570IS. The 710 has more zoom on the lens, which is nice, as well as having image stabilization, which is a great feature.
The only thing that the A640 has is 10Mpix vs 7Mpix. If you plan on blowing up to poster size, perhaps you'll see a difference, but for any print less than 11x17", you won't notice the difference. The A640 will just have larger and more unwieldy files and the camera is larger and heavier as well.
Oh, the A640 is also $100 more expensive.
http://www.dpreview.com/reviews/canona64...
http://www.dpreview.com/reviews/canona71... I would choose the a710
but, I suggest the canon a570 I would go for the A640 | 