Cameras are light-proof boxes which

Cameras are light-proof boxes which are used for taking photographs. They consist of a body which is a Light-proof box, usually made of mete lord plastic. The body contains film. Film is alight sensitive material which records the photograph. Cameras also have an aperture or a hole, for light to enter the box, and a shutter to open and close the aperture. The shutter is usually made of metal. Either in front or behind the aperture there is a lens which is a piece of glass or plastic. The lens makes the photograph sharp.