Details of exhibit
- Exhibition:
- 1900 Forty-fifth Annual Exhibition of the Royal Photographic Society
- Exhibit title:
- Photographs in Colour
- Exhibitor:
- Colour-Photo Co.
- Section:
- Scientific, Technical and Photo-Mechanical Exhibits
- Exhibit No.:
- 554
- Description:
- Transparencies on glass in colour, produced by the McDonough-Joly process, which is an improved and practical working out of an early method suggested and demonstrated by Louis Ducos du Hauron. It is based, like most of the modern processes of colour photography, on the researches of Clerk Maxwell and on the Young-Helmholtz theory of the nature and properties of light. It proceeds on lines of analysis and synthesis, breaking up the effect of light upon the photographic plate into three separate colour-sensation effects, the impressions of which are produced simultaneously by one exposure upon a single photographic plate, through the intervention of a screen ruled with the three fundamental colours - red, green and violet, in very fine parallel lines. By viewing the resulting print or transparency through a second similar screen, properly adjusted, the three-colour effects are again combined, and produce a coloured representation of the original subject. The process can also be applied to the production of photo-mechanical prints in colours on paper, suitable for book illustration or other purposes.
- Exhibit type:
- Photograph
- Process:
- McDonough-Joly (Colour)
- Award:
- none
