How do cameras work?
In: Technology
Depends on the technology involved.
A film camera exposes a sheet of photo-sensitive chemicals (film) to light, the chemicals react and the light is ‘burned’ into it, preserving the image.
A digital camera replaces the sheet of chemicals with a grid of photo-sensitive… sensors. Each sensor detects one of the three primary additive colours, Red Green and Blue, and are usually distributed in a [Bayer Filter](https://en.wikipedia.org/wiki/Bayer_filter) arrangement. When exposed to its corresponding light each sensor puts out a voltage proportional to the amount of light it detects, these voltages and their intensity is recorded by the camera and can then be represented on the other end as a digital image.
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