A procedure for producing moving or still images by detecting the radiations from the ways of capturing the live data and storing it onto a sensitive medium such as digital sensors or electromagnetic movie can be known as photography.
Functions of a camera
The image forming apparatus is the camera. The recording medium is a photographic film or digital image sensors.
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Using a lens the vulnerability of the camera into the outer world is controlled by the amount of light and time that is the fundamental principle of this camera. We can form an image on a film if there is sufficient lighting. To get a real time original picture this raw image can then be developed.
Another sort of camera in which not just the still but the overall movements are recorded is movie camera. With no delay between them in a sequence of photos the data are recorded which is the fundamental idea behind the film camera. Often caught with the voice this creates a moving frame.