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How Digital Cameras Record Images
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 Traditional cameras create images by allowing light to pass through a lens onto film. The film is coated with light-sensitive chemicals, and wherever light hits the coating, a chemical reaction takes place, recording a latent image. During the film development stage, more chemicals transform the latent image into a printed photograph.
Digital cameras also use light to create images, but instead of film, digital cameras capture photos using an imaging array, which is indeed "light-sensitive computer chips." Currently, these chips come in two styles: CCD, which stands for charge coupled device, and CMOS, which is short for complementary metal-oxide semiconductor.
CCD and CMOS chips differ in some important ways, but both chips do essentially the same thing. When struck by light, they emit an electrical charge, which is analyzed and translated into digital image data by a processor inside the camera. The more light, the stronger the charge.
After the electrical impulses are converted to digital image data, the data is saved to the camera's memory, which may come in the form of an in camera memory chip or a removable memory card or disk. To access the images that your camera records, you simply transfer them from the camera or chip memory to your computer. With most digital cameras, you can transfer pictures directly to a television monitor or printer, enabling you to view and print your photographs without ever turning on your computer.
Using Modern Digital Cameras | Benefits of Digital Cameras | How Digital Cameras Record Images | Digital Photo Resolution | Editing Digital Photo Resolution Outputs | How Many Pixels are Enough for Printing | More Pixels Means Bigger Digital Files | Screen Picture Quality Image Resolution
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