CROS (Charles).

Lot 316
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Estimation :
800 - 1000 EUR
CROS (Charles).
General solution for colour photography. Paris, Gaulthier-Villars, 1869. Brochure in-8, paperback, printed cover. Original, very rare edition of the author's first book and pioneering text on the invention of color photography. The brochure includes the essence of a communication made to the Academy of Sciences two years earlier (1867) and an article published in Les Mondes. However, Cros adds an essential novelty: chromatic synthesis. From this moment on, the photograph of colours is, at least theoretically, found (cf. In French in the text, n°292). As very often, the selling price of 1 franc indicated on the cover is scratched off (here replaced by the number 15 [franc]), the edition having remained on sale at Gauthier-Villars for nearly a hundred years.
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