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How does a camera work? |
How Cameras Work
In film cameras, there are chemicals that change their nature when exposed to light.
Light from the sun and other sources reflects off of objects and is focused by a glass lens, at the end of the lens is an aperture control, a diaphragm that opens and closes to allow more or less light through the lens. At the rear of the camera (just in front of the film or light sensor) is a shutter. The shutter is in the form of several curtains that expose the film/light sensor to a consistent amount of light across the entire film/sensor. The amount of time the shutter is open helps determine how much light will reach the sensor. When the shutter is open the image projects onto a light sensitive material. (Film, a digital sensor) After the shutter closes, the film is wound into a light tight canister, or in the case of digital the signal from the sensor is collected and stored on a memory card.
Other setups do exist but are generally follow the same principles.
First answer by ID3350812466. Last edit by Casinodeverasela. Contributor trust: 13 [recommend contributor]. Question popularity: 65 [recommend question]
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