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exposure meter
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exposure meter

Instrument used in photography for indicating the correct exposure – the length of time the camera shutter should be open under given light conditions. Meters use substances such as cadmium sulphide and selenium as light sensors. These materials change electrically when light strikes them, the change being proportional to the intensity of the incident light. Many cameras have a built-in exposure meter that sets the camera controls automatically as the light conditions change.



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? Mentioned in ? References in periodicals archive
 
Cromer, Final Report on Calibration and Characterization of I-Line Exposure Meters, SEMATECH Report 91090678A-ENG, SEMATECH, Austin, TX 78741, October 17, 1991.
Sources of Error in UV Radiation Measurements by Cromer, Christopher L. / Journal of Research of the National Institute of Standards and Technology
The company's products range from binoculars to the world's most advanced planetariums, from photographic exposure meters to radiometric instruments used for a variety of light and measurement purposes, and from office copiers to sophisticated computer-based digital information and imaging systems.
Netreon, Inc. to Integrate New Networking Capabilities into Minolta ... by Business Wire
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