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 146
PHOTOGRAPHIC OPTICS 120 two together thus forming a sphere with the diaphragm at the common centre of curvature. In fact, it is precisely similar to my single meniscus, only with a second similar lens reversed on the other side of the diaphragm. Since all the rays are practically chief rays, it… … Fig. 87. — Goerz Hypergon Lens. Angle = 135°. S = stop to equalize the light. F = 60. avoid coma), viz. F/20. There is practically no astigmatism ( see page 106). It is, of course, non-achromatic. The values are rx = + 5,083 /ic = 1,508 t = 1,324 /xF = 1,516 r2 = - 5,106 4 = 4>°70 /iD = 1,5105 fia…
Photographic optics · Color photography
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-b21287223-142-0.webp)
