Traditional Culture Encyclopedia - Photography and portraiture - O Make a photographic noun
O Make a photographic noun
[guāng quān]
Aperture
Aperture is a device used to control the amount of light that passes through the lens and enters the photosensitive surface of the fuselage. It usually It's in the shot. We use f-number to express aperture size. For a lens that has been manufactured, we cannot change the diameter of the lens at will, but we can control the amount of light passing through the lens by adding a polygonal or circular hole-shaped grating with variable area inside the lens. This device is called an aperture.
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