How in the living hell does a camera work in a way that my common folk brain can comprehend?
In: Technology
Light goes through a lens which concentrates it onto a small light-sensitive area at the back of the camera–in old cameras that was a chemically treated photographic film, nowadays it’s more likely to be an electronic sensor. There’s a shutter in front of the light-sensitive film which opens (briefly) when you press the button, allowing the light to reach it and imprint the image onto it, or the sensor is switched on briefly on electronic ones to have the same effect.
Film camera:
Similar to how glasses help people with reduced vision see, the lens of a camera helps the camera “see”. When a person takes a picture, the lens is helping the camera see the subject clearly, or in focus. A small hole is opened when the user clicks the shutter button. This hole allows light to go into the body of the camera. The film inside the body of the camera is then exposed to the light. Similar to how our skin tans when we get a lot of sunshine, film darkens in the areas that received the most light.
This is why film creates the “negatives” because it’s like the negative filter on camera apps. Everything that shows up as bright to the human eye, will receive more light on the film, turning that area darker in color (like our tanning skin).
Once a very small amount of time is over, the small hole shuts, and the inside of the camera and the film is no longer exposed to light. A new price of film is moved into the main chamber and the camera is ready to take another picture.
camera sensors are like small solar panels, they convert light to electricity. If we measure the electricity, it’s like counting photons.
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