Sporting 10 Megapixels, the A640 becomes the highest resolution PowerShot A-Series model so far, although the A630 follows close behind with 8 Megapixels. Beyond resolution, the A640 is bundled with a larger 32MB memory card compared to the 16MB of the A630, although both will need to be replaced with something much bigger straightaway. The A640 additionally allows remote capture through software control on a PC or Mac, a feature which is not supported on the A630. Finally, the A640 has a black finish, while the A630 is in silver.



Link: Camera Labs