Digital and film cameras share an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device. The diaphragm and shutter admit the correct amount of light to the imager, just as with film but the image pickup device is electronic rather than chemical. However, unlike film cameras, digital cameras can display images on a screen immediately after being recorded, and store and delete images from memory. Many digital cameras can also record moving video with sound. Some digital cameras can crop and stitch pictures and perform other elementary image editing.

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A digital movie camera for digital cinematography is a video camera that captures footage digitally rather than the traditional movie camera, which shoots on film stock. Distinct digital video cameras produce a range of different acquisition formats.

A film camera requires you to press a button in order to capture an image. This activates a device known as the shutter, which opens a hole (the aperture) at the front of the camera for a brief period of time, enabling light to pass through the lens (a thick piece of glass or plastic mounted on the front). The light produces chemical reactions in the film's components, storing the image in front of you.However, this is not the end of the procedure. When the film is finished, you must take it to a pharmacy (chemist's) to be processed. Typically, this entails loading the film into a massive automated developing process.

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