orthochromatic

American  

[awr-thuh-kroh-mat-ik, -thoh-kruh-] / ˌɔr θə kroʊˈmæt ɪk, -θoʊ krə- /

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.

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orthochromatic British  

/ ˌɔːθəʊˈkrəʊməˌtɪzəm, ˌɔːθəʊkrəʊˈmætɪk /

adjective

1. Sometimes shortened to: ortho.  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 Compare panchromatic

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Other Word Forms

• orthochromatism noun

Etymology

Origin of orthochromatic

First recorded in 1885–90; ortho- + chromatic

Example Sentences

He had devised a solution that could keep her blue eyes from turning white on camera, a problem caused by the blue-sensitive orthochromatic film used at the time.

From New York Times • May 27, 2022

You spoke at the Q&A about using orthochromatic film, which I had to look up.

From The Verge • Oct. 18, 2019

And we used a filter to create more of an orthochromatic look.

From The Verge • Oct. 18, 2019

So it wasn’t as aggressively orthochromatic as the film stock of early cinema.

From The Verge • Oct. 18, 2019

If, however, a yellow contrast filter is placed in front of the camera lens, and an orthochromatic plate used, the blue will be reproduced in the photograph as a dead black.

From Wireless Transmission of Photographs Second Edition, Revised and Enlarged 1919 by Martin, Marcus J.