Photographic optics and colour photography : including the camera, kinematograph, optical lantern, and the theory and practice of image formation (1909)
Johnson, G. Lindsay (George Lindsay), 1853-1943 · New York : D. Van Nostrand Co. · leaf 228
PLATE VI. … Fig. 151. Fig. 152. — Sir William Abney’s apparatus for determining the speed of a shutter. (By permission of the inventor.) To face p. 197.]
Photographic optics · Color photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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