Today I would like to explain the term : Sabattier- effect
The Sabattier effect is used in photography, also known as pseudo-solarization. The image on the negative , or on the photographic print are wholly or partially reversed in tone . Dark appears lighter and vica versa.I use it occasionally in my analogue photography processes, but for all digital fans, there is the aftereffect possible. As far as I'm aware on Photoshop in form of a filter. ( I'm the analogue girl in an digital world).
The French scientist, doctor Armand Sabattier ( 1834-1910) developed this method of reversal of the image tones, with the help of extreme overexposure.
Additional to the tone reversal, it gives a narrow band, or rim of low density on the edges of highlights and shadows.
The white band called the Mackie Line. Around the area's of high contrast.
The method is time consuming and unpredictable- which holds part of the attraction for me. There is no right or wrong in the outcome, it is a question of personal taste.
I show some of my pin hole photographs, and used the same image in 3 of the examples. It shows, that the same outcome is not possible to achieve. Some images are also gone through one or more additional processes: chemigram, souping, and double exposure.
the sky is the limit, and I get easily carried away.