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The Sciopticon manual : explaining lantern projections in general, and the Sciopticon apparatus in particular, including magic lantern attachments, experiments, novelties, colored and photo-transparencies, mechanical movements, etc. (1877)

Marcy, L. J. (Lorenzo J.) · Philadelphia : J.A. Moore · leaf 81

An illustration from The Sciopticon manual : explaining lantern projections in general, and the Sciopticon apparatus in particular, including magic lantern attachments, experiments, novelties, colored and photo-transparencies, mechanical movements, etc., 1877, leaf 81
fected, either by having the negative in actual contact with the sensitive plate, however widespread the light, or else by 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… … Fig. 24. 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 print,…

Lantern projection · Slides (Photography)

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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