Sabattier effect
Photographic tone reversal technique / From Wikipedia, the free encyclopedia
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"Pseudo-solarization" redirects here. For the original overexposure effect, see Solarization (photography). For other uses, see Solarization (disambiguation).
Not to be confused with Sabatier reaction.
The Sabatier effect, also known as pseudo-solarization (or pseudo-solarisation) and erroneously referred to as the Sabattier effect, is a phenomenon in photography in which the image recorded on a negative or on a photographic print is wholly or partially reversed in tone. Dark areas appear light or light areas appear dark. Solarization and pseudo-solarization are quite distinct effects. Over time, the "pseudo" has been dropped in many photographic darkroom circles and discussions,[1] but the effect that is meant is the Sabattier effect and not the solarization by extreme overexposure (see below).