Originally Posted by HansAuf
The lens focuses light onto a small semiconductor image sensor. This sensor, a charge-coupled device (CCD), measures light with a panel of hundreds of thousands of tiny light-sensitive diodes called photosites. Each photosite measures the amount of light (photons) that hits a particular point, and translates this information into electrons (electrical charges). A brighter image is represented by a higher electrical charge, and a darker image is represented by a lower electrical charge. So essentially the CCD creates a video picture by recording light intensity.
That's got to get "Post of the Day"