How Digital Cameras Work: Vital Information You Must Know Before You Buy
Digital cameras are basically the same as film cameras in their handling. They both have a lens to focus the specific image, a shutter to let light inside the camera, and an aperture to control the amount of light which enters the camera.
The differences between digital and traditional photography happen to be after the light enters the camera. A traditional camera captures the images on film, while a digital camera captures the image on an image sensor.
Image sensors are electronic devices made up of an array of electrodes ( or photosites ) which calculate light intensity. The most universally recognized type of image sensor for digital cameras is the CCD ( Charge - Coupled Device ) although others such as CMOS and Foveon are sometimes used.
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