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. See panchromatic
   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

Derived Forms

• orthochromatism, noun

Word History and Origins

Origin of orthochromatic¹

First recorded in 1885–90; ortho- + chromatic

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg