A camera is a device that records and stores images. These images may be still photographs or moving images such as videos or movies.

A camera is a device that records and stores images. These images may be still photographs or moving images such as videos or movies. The term camera comes from the word camera obscura (Latin for “dark chamber”), an early mechanism for projecting images. The modern camera evolved from the camera obscura.

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Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end.

A majority of cameras have a lens positioned in front of the camera’s opening to gather the incoming light and focus all or part of the image on the recording surface.┬áThe still camera takes one photo each time the user presses the shutter button.

Other cameras including the majority from the 20th century use photographic film.

The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture. Most cameras use an electronic image sensor to store photographs on Flash memory. Other cameras including the majority from the 20th century use photographic film.