The sciopticon manual. Explaining Marcy's new magic lantern, and light, including magic lantern optics, experiments, photographing and coloring slides, etc (1874)
Marcy, L. J · [Philadelphia] Sherman · leaf 81
ected, either hy having the negative in actual contact with the sensitive 'plate, however widespread the light, or else hy having an intense light proceeding from a single point, though the plates may be wide apart. In the latter case the point of light should be distant compared with the space… … Fiff. H4. It consists of an upright frame in which the sensitive plate is held slightly separate from the negative, and a coal oil lamp, from which the light of a wide flat flame is emitted through a narrow horizontal slit — small and at considerable distance from the frame to produce a sharp…
Lantern projection · Slides (Photography)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
