orthochromatic

/awr-thuh-kroh-mat-ik, -thoh-kruh-/US // ˌɔr θə kroʊˈmæt ɪk, -θoʊ krə- //UK // (ˌɔːθəʊkrəʊˈmætɪk) //

正色的,正色系,正色,正色系的

Definitions

adj.形容词 adjective

1
Photography.
- : representing correctly the relations of colors as found in a subject; isochromatic.
- : sensitive to all visible colors except red; isochromatic.

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.