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Characteristic curve SWPP and BPPA Photographic Glossary

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Characteristic curve

A graph used to show a film emulsion or developer's restrictions of tonal reproduction, relative speed and fog level performance graph showing the relationship between exposure and density under known developing conditions. It can provide immediate comparative information on factors such as emulsion speed, fog level, and contrast effect. The study of photographic chemicals in this way is known as sensitometry.



 

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