Colour photography. A practical treatise for amateurs (1900)
Smith, A. E · London, Hazell, Watson & Viney, ld. · leaf 76
Colour Photography. 64 E and F are transparent reflectors, or mirrors, placed at an angle of forty-five degrees to the red and blue glasses respectively. Every one knows that when an object is held, say, two feet in front of a domestic looking-glass, it will appear to occupy \ ns … The Kromskop." an equal distance behind it. In the Kromskop " the reflectors E and F are equidistant from the coloured glasses A C and B C respectively. Therefore it must be plain to all that upon look- ing through the magnifying lens at G, which is focussed upon C, we shall see the red and blue…
Color photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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