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单词 reciprocity failure
释义

Definition of reciprocity failure in English:

reciprocity failure

noun
mass nounPhotography
  • Deviation of an emulsion from the principle that the degree of darkening is constant for a given product of light intensity and exposure time, typically at very low or very high light intensities.

    Example sentencesExamples
    • Now if you have read about time exposures you will have come across the phrase ‘reciprocity failure’ with long time exposures.
    • I've always thought this was a deliberate affectation, the result - in the case of photography - of six years of art school spent learning about reciprocity failure, platinum printing and other arcane chemistries.
    • Those of you who have read books and magazines will have read about ‘reciprocity failure’ with long time exposures.
    • The next fact is that you also do not need to know anything about shutter speeds, zoom lenses, reciprocity failure or the like.
    • There's something called reciprocity failure which basically means that for exposure times above 1 second, the film takes longer to do what it should be doing and as a result, interesting qualities of light and shade develop.
 
 

Definition of reciprocity failure in US English:

reciprocity failure

noun
Photography
  • Failure of an emulsion to follow the principle that the degree of darkening is constant for a given product of light intensity and exposure time, typically at very low or very high light intensities.

    Example sentencesExamples
    • Now if you have read about time exposures you will have come across the phrase ‘reciprocity failure’ with long time exposures.
    • There's something called reciprocity failure which basically means that for exposure times above 1 second, the film takes longer to do what it should be doing and as a result, interesting qualities of light and shade develop.
    • The next fact is that you also do not need to know anything about shutter speeds, zoom lenses, reciprocity failure or the like.
    • Those of you who have read books and magazines will have read about ‘reciprocity failure’ with long time exposures.
    • I've always thought this was a deliberate affectation, the result - in the case of photography - of six years of art school spent learning about reciprocity failure, platinum printing and other arcane chemistries.
 
 
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更新时间:2025/1/31 7:59:43