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A camera is a device that records images, either as a still photograph or as moving images known as videos or movies. The term comes from the camera obscura, an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.

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 at one end for light to enter.