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by Jason Geller · Posted
The aperture of the lens controls the amount of light that passes through on its way to the camera's sensor or film plane. A camera's aperture is also commonly called its f-stop, though 'f-stop' technically refers to the diameter of the opening created by internal adjustable blades, rather than the entire mechanism. While a camera can function without the use of a shutter, all cameras must have an opening for light to enter and make an exposure. Early photographers