Sabattier effect
Is the part positive part negative effect formed when an emulsion is briefly re exposed to white light during development, and then allowed to continue development. Also known as pseudo solarization.
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Sabattier effect redirects here. For other uses of the terms Sabattier or Sabatier, see Sabatier (disambiguation).
Sabattier Effect: A special effect darkroom technique that produces both negative and positive images on the same film or paper by re-exposure to light partway through development.
After Stevens and Norrish completed their research on the Sabatier effect, they wrote223 "We thus see that the Sabattier effect still occurs when all the previously suggested causes are eliminated.
 See also: Light, Solarization, Development, Exposure, Image
  
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