all cameras average the existing light. What that means is, just because you can see it, doesn't mean the camera can. The human eye is far more sophisticated than the most expensive camera money can buy. For example, you stand someone in front of a bright window, your eye can still tell who that person is, but the camera can not, at least, not without help. Your eye will zoom into a person's face and ignore that bright light around them, but the camera will not
In the best case, Mac OS X Leopard on standard PC hardware can use the full graphics acceleration (Quartz, Core Image) and all the characteristics of CPU
recently their in-depth review of the new Canon Rebel XS 1000D!
Canon G9 that seemed to have nice specs (12.1 megapixels, a 35-210mm image stabilized lens, and RAW capabilities) and an even nicer price (under $500). The images on the big LCD looked great and the list of pro features on the camera was impressive