Tuesday, April 22, 2008

A camera is a device used to take pictures, either alone or in sequence, with or without sound, such as with video cameras. The name is consequent from camera obscura, Latin for "dark chamber", an early mechanism for projecting images in which an whole room functioned much as the internal workings of a modern photographic camera, except there was no way at this time to record the image little of manually tracing it. Cameras may work with the visual spectrum or other portions of the electromagnetic spectrum.

Every camera consists of some kind of enclosed chamber, with an opening or aperture at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. This diameter of the aperture is often controlled by an diaphragm mechanism, but some cameras have a fixed-size opening.

Video and digital cameras use electronics, usually a charge coupled device or sometimes a CMOS sensor to detain images which can be transferred or stored in tape or computer memory within the camera for later playback or processing.Traditional cameras capture light onto photographic film or photographic plate.

A video camera is a group of movie camera which stores images onto magnetic tape.Cameras that capture many images in sequence are known as movie cameras or as ciné cameras in Europe; those designed for distinct images are still cameras. However these categories overlap, as still cameras are often used to capture moving images in special belongings work and modern digital cameras are often able to trivially switch between still and motion recording modes.


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