iris diaphragm
(redirected from Diaphragm (optics))

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iris diaphragm

A circular device with a variable diameter, commonly used on cameras to regulate the amount of light admitted to a lens.

iris diaphragm

(Miscellaneous Technologies / Photography) an adjustable diaphragm that regulates the amount of light entering an optical instrument, esp a camera. It usually consists of a number of thin metal leaves arranged so that they open out into an approximately circular aperture Sometimes shortened to iris

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Noun

iris diaphragm - diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening

iris

diaphragm, stop - a mechanical device in a camera that controls size of aperture of the lens; "the new cameras adjust the diaphragm automatically"

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iris diaphragm (redirected from Diaphragm (optics))

iris diaphragm
(redirected from Diaphragm (optics))