Digital cameras work differently from film cameras because they capture light onto imaging arrays or chips as they are commonly referred to. These chips contain CCD's or 'charge coupled devices'.
Charge coupled devices emit a charge when they come in to contact with light. As a result they turn this light information into digital binary information in the processing part of the camera. 'Binary' is computer speak for zeroes and ones in lots of lovely different combinations.
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Pixels is short for picture elements. A mega pixel is equal to one million pixels. The more pixels you have the greater the recording ability of the camera. For instance, if you have a 10 mega pixel camera you have 10 million pixels for image capture. You cannot rely just on pixel count for quality. The other factors that come into this equation are the specification of the lens that is built into the camera body as well as the capability of the imaging arrays.
There is still a lingering debate about the aesthetics of the image quality of a digital photo when compared to a film photo. Some practitioners argue that the physical capture of light onto film through a chemical process as opposed to an electronic one makes the difference. The electronic version - the digital camera - is turning light into information and therefore changing it from its essential state. It is a process of transformation.
Aesthetic and metaphysical arguments aside, digital cameras today produce great results whilst making photography, image processing and sharing accessible to everyone no matter what their budget.
How Do Digital Cameras Work?
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