The book of the lantern : being a practical guide to the working of the optical (or magic) lantern : with full and precise directions for making and coloring lantern pictures (1889)
Hepworth, Thomas Cradock, -1905 · New York : E.L. Wilson · leaf 40
our first efforts at lantern projection, we get an indistinct and badly-lighted portion of a picture presented to us. How can we remedy this state of things ? Ob- viously, the thing to be done is to cause more of the rays from our light source to be utilised, and tnis can be brought about by… … Fig. 11. the addition of a condenser, shown m this case, for the sake of simplicity, as a single lens. Referring once more
Lantern projection
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Photographic optics and colour photography [electronic resource] : including the camera, kinematograph, optical lantern, and the theory and practice of image formation (1909)](https://img.insideoutlibrary.com/img/200/ia-b21287223-166-0.webp)
