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orthochromatic

[ awr-thuh-kroh-mat-ik, -thoh-kruh- ]

adjective

, Photography.
  1. representing correctly the relations of colors as found in a subject; isochromatic.
  2. (of an emulsion) sensitive to all visible colors except red; isochromatic.


orthochromatic

/ ˌɔːθəʊˈkrəʊməˌtɪzəm; ˌɔːθəʊkrəʊˈmætɪk /

adjective

  1. photog of or relating to an emulsion giving a rendering of relative light intensities of different colours that corresponds approximately to the colour sensitivity of the eye, esp one that is insensitive to red light Sometimes shortened toortho Compare panchromatic
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Derived Forms

  • orthochromatism, noun
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Word History and Origins

Origin of orthochromatic1

First recorded in 1885–90; ortho- + chromatic
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Example Sentences

On the few occasions when orthochromatic plates are used the lamp need not be lighted.

Only the freshest obtainable orthochromatic double-coated plates are used.

In actual practice an orthochromatic mixture of frequencies is used to give a black, gray and white picture.

I will give to a common plate about four seconds, an orthochromatic plate under the same conditions five seconds.

The isochromatic and orthochromatic plates on the market are corrected, and are the best to use.

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