Orthochromatic

Orthochromatic

Orthochromatic refers to any spectrum of light that is devoid of red light.

Orthochromatic photography

Orthochromatic photography refers to a photographic emulsion that is sensitive to only blue and green light, and thus can be processed with a red safelight. The increased blue sensitivity causes blue objects to appear lighter and red ones darker. A cyan lens filter—which removes red light—can be used with standard panchromatic film to produce a similar effect.[1]

Orthochromatic films were first produced by Hermann Wilhelm Vogel in 1873 by adding small amounts of certain aniline-based dyes to photographic emulsions which had hitherto been sensitive to blue light only. This work was extended by others including Josef Maria Eder, who introduced the use of the red dye erythrosine in 1884.[2]

See also

  • Panchromatic

References

  1. ^ http://books.google.com/books?id=XwTw4x6RvSEC&pg=PA206-IA62
  2. ^ http://photography.about.com/library/glossary/bldef_ortho.htm

Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • orthochromatic — [ôr΄thōkrō mat′ik] adj. [ ORTHO + CHROMATIC] designating or of photographic film that is sensitive to all colors except red and deep orange …   English World dictionary

  • orthochromatic — Denoting any tissue or cell that stains the color of the dye used, i.e., the same color as the dye solution with which it is stained. SYN: euchromatic (1), orthochromophil, orthochromophile. [ortho + G. chroma, color] * * * or·tho·chro·mat·ic… …   Medical dictionary

  • orthochromatic material — ortochromatinė medžiaga statusas T sritis chemija apibrėžtis Fotografinė medžiaga nespalvotam atvaizdui gauti, jautri violetinei, mėlynai ir pajautrinta žaliai bei geltonai šviesai (iki 600 nm bangos ilgio). atitikmenys: angl. orthochromatic… …   Chemijos terminų aiškinamasis žodynas

  • orthochromatic emulsion — ortochromatinė emulsija statusas T sritis fizika atitikmenys: angl. orthochromatic emulsion vok. orthochromatische Emulsion, f rus. ортохроматическая эмульсия, f pranc. émulsion orthochromatique, f …   Fizikos terminų žodynas

  • orthochromatic — adjective Etymology: International Scientific Vocabulary Date: 1887 1. of, relating to, or producing tone values of light and shade in a photograph that correspond to the tones in nature 2. sensitive to all colors except red …   New Collegiate Dictionary

  • orthochromatic — adj. [Gr. orthos, straight; chromos, color] With normal staining characteristics …   Dictionary of invertebrate zoology

  • orthochromatic — /awr theuh kroh mat ik, thoh kreuh /, adj. Photog. 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. [1885 90; ORTHO + CHROMATIC] * …   Universalium

  • orthochromatic — adjective a) Being uniformly sensitive across the entire visible range, and thus reproducing colours faithfully b) Sensitive to all colours except red …   Wiktionary

  • Orthochromatic — Ортохроматический; чувствительный к фиолетовым, синим, зелёным и жёлтым лучам …   Краткий толковый словарь по полиграфии

  • orthochromatic — adj. pertaining to a sensitivity to all colors of light except for red (Photography)or·tho·chro·mat·ic || ‚ɔrθəʊkrəʊ mætɪk /‚ɔː …   English contemporary dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”