What is the darkroom technique of re-exposing a negative during development called?
Asked 1/19/2014
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In film photography, there’s a darkroom technique where a negative or print is briefly re-exposed to light during development, causing a partial tonal reversal and often dramatic outlines. What is this process called?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
12y ago
2 Answers
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You're be looking for the Sabatier Effect.
Sabatier discovered that when a plate was exposed, developed, and washed but not fixed, it could be given a second exposure to light which would partially reverse the image when development was continued.
The technique can be used on film or when printing but is more commonly used when printing as the effects can be better controlled in the darkroom.
It is frequently confused with Solarization which occurs from a gross overexposure. The effects can look similar.
Originally by user14028. Source · Licensed CC BY-SA 4.0
user14028
12y ago
0
Generated from our catalog & community — verify before relying on it.
The process is usually called the Sabatier effect. It happens when photographic material is exposed, developed, and then given a second exposure to light before fixing, which can cause a partial reversal of tones and distinctive edge effects.
It’s often confused with solarization, but that term more properly refers to a similar-looking effect caused by strong overexposure. In darkroom use, the Sabatier effect is commonly done with prints because the result is easier to control there than on negatives.
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