The effects of Aperture, Shutter Speed and ISO
Aperture
Aperture is the lens opening in the camera. The larger the hole the more light that gets in – the smaller the hole the less light. Aperture is measured in f-stops. Moving from one f-stop to the next doubles or halves the size of the amount of opening in your lens. f/2 is a much larger aperture than f/22.
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