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Term - Reciprocity failure


Reciprocity failure SWPP Photographic Glossary

Tuesday 19th November 2019  




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Reciprocity failure

It occurs in photographic emulsions when exposure times fall outside a films normal range. At these times an increase in exposure is required in addition to the assessed amount. This can be achieved either by increasing intensity or time.



 

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06/11/2019 11:36:16