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A little help with understanding camera exposure.
One way to think of exposure is like a seesaw. As one child rises a given distance on the seesaw, the other falls by the same amount. Their average distance from the ground is always the same. With your camera set to autoexposure, as you change the aperture or shutter speed to let in more or less light, the other setting changes in the opposite direction to keep the exposure constant.
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