Digital Cameras 2U

Digital camera Pixels

The resolution of a digital camera is determined by the camera sensor (usually a Charged Coupled Device or CCD chip) that turns light into digital information, replacing the job of film in traditional photography. It represents this light value in pixels, which are little squares (on a CCD) that make up the image. Each pixel can store one digital value, which can then be recalled and put with other pixel values to generate a digital photograph.

The more pixels the camera can recall, the better the resolution it can offer. Cameras are usually characterised by the number of megapixels they offer, when a million pixels is equal to a megapixel.