19th century printed reproduction of a still life believed to be a circa 1832 Niépce physautotype (glass original accidentally destroyed circa 1900)[1]
The physautotype (from French, physautotype) was a photographic process, invented in the course of his investigation of heliography, by Joseph Nicéphore Niépce and Louis Jacques Mandé Daguerre[2] in 1832, in which images were produced by the use of lavender oil residue dissolved in alcohol as the photographic agent.[3][4] The solution was coated onto a silver or glass plate and allowed to dry, after which it had a powdery white appearance.[citation needed] The plate was then exposed in a camera obscura for about 8 hours and developed with petroleum-based spirit vapors,[3] which caused the least strongly exposed areas to become proportionally more transparent, creating a photographic image that was positive when viewed against a darker background.
^Jean-Louis Marignier. "Identification of the image called "La Table Servie" as a physautotype made by Niepce in 1832 - 1833". Université Paris-Sud. Retrieved 20 May 2016.
^"Daguerre and the Invention of Photography (Physautotype)". Photo-museum.org.
^Roger Watson; Helen Rappaport (2013). Capturing the Light: A Story of Genius, Rivalry and the Birth of Photography. Pan Macmillan. ISBN 978-0-230-77151-2.
The physautotype (from French, physautotype) was a photographic process, invented in the course of his investigation of heliography, by Joseph Nicéphore...
they invented a new process that rendered a single, unique image, the physautotype, which exploited the photosensitivity of the residue from oil of lavender...
and improve the process. The improved process was eventually named the physautotype. Niépce's early experiments had derived from his interest in lithography...
process of Nicéphore Niépce in 1822 (Gernsheim 1986, p. 9). The later physautotype process, co-invented by Niépce and Louis Daguerre in the early 1830s...
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