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RECIPROCITY-LAW FAILURE [1 record]
Record 1 - internal organization data 2004-08-04
Record 1, English
Record 1, Subject field(s)
- Photography
- Cinematography
Record 1, Main entry term, English
- reciprocity effect
1, record 1, English, reciprocity%20effect
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- reciprocity-law failure 1, record 1, English, reciprocity%2Dlaw%20failure
correct
- effect of reciprocity-law failure 2, record 1, English, effect%20of%20reciprocity%2Dlaw%20failure
- reciprocity failure 3, record 1, English, reciprocity%20failure
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Reciprocity effect. All photographic emulsions are subject to an effect often called reciprocity-law failure. The reciprocity law states that intensity of the illumination falling on a film times the exposure time equals the amount of exposure (E = I x T). This law does apply for most black-and-white films from exposure times of about 1/5 sec. to 1/1000 sec. and for colour films over a narrower range. Thus, where the law holds, an exposure of 1/60 sec. at f/11 is equivalent to an exposure of 1/30 sec. at f/16. 2, record 1, English, - reciprocity%20effect
Record 1, French
Record 1, Domaine(s)
- Photographie
- Cinématographie
Record 1, Main entry term, French
- effet Schwarzschild
1, record 1, French, effet%20Schwarzschild
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- écart à la loi de réciprocité 1, record 1, French, %C3%A9cart%20%C3%A0%20la%20loi%20de%20r%C3%A9ciprocit%C3%A9
correct, masculine noun
- effet de réciprocité 2, record 1, French, effet%20de%20r%C3%A9ciprocit%C3%A9
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Perte de sensibilité du film selon l'écart entre le temps choisi (lent ou rapide) et le temps pose standard (entre 1/8 et 1/1000 de seconde) d'un film donné. 3, record 1, French, - effet%20Schwarzschild
Record number: 1, Textual support number: 1 OBS
Chaque type de film possède sa propre courbe de sensibilité. D'un écart trop important résulte un tirage sous-exposé ou présentant des dominantes. 3, record 1, French, - effet%20Schwarzschild
Record 1, Spanish
Record 1, Textual support, Spanish
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