The casing surrounds the camera and helps protect the inside parts from being damaged. It also prevents extra light from getting on the film.
The shutter controls how long the film is exposed to light. It is behind the lens and opens when a picture is taken.
The lens is a piece of glass that directs sunlight into a concentrated beam of light that helps create a an image.
light strikes the emulsion on the film, allowing it to record an image.
The flash circuit creates a short burst of light while the shutter is open, allowing the film to receive more light, making a more clear image.
The gas discharge tube creates an electrical current by moving electrons from one electrode to the other, powering the flash circuit.