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is defined as an apparatus for taking photographs or film or television pictures. It is a lightproof box through which an image is focused and recorded on film. Today there are many different types of cameras in use, all of them more or less advanced versions o ....

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.... view cameras, the whole lens and the panel are moved toward or away from the film. To view an object for composing nearly every camera has some kind of viewfinder. One of the simplest types is a screen that is placed on the back of the camera and replaced by the film in making the exposure. This time-consuming procedure is avoided in the modern 35-mm single-lens reflex cameras by placing the screen in a special housing on top of the camera. Inside the camera there is a movable mirror that bounces the image from the lens to the screen for viewing and focusing, and then flips out of the way when the shutter is tripped, so that the image hits t ....