A camera is a device capable of projecting and storing an image on a screen.
In old equipment, where a film must be placed inside the camera, the screen used is a photosensitive film capable of providing a chemical reaction between the salts of the film and the light falling on it.
In the case of digital cameras, one part of the screen consists of an electronic device, known as a Charge-Coupled Device (CCD), which converts the light intensities on it into storable digital values in the form of bits and dots. (Dice).
The optical operation of the camera is basically equivalent to that of a dark camera, with the particularity that instead of the hole a converging lens is used. At the bottom of the camera is the bulkhead to which the image will be recorded.