File:The American annual of photography (1911) (14781129844).jpg

Identifier: americanannualof1911newy (find matches)
Title: The American annual of photography
Year: 1911 (1910s)
Authors:
Subjects: Photography
Publisher: New York : Tennant and Ward
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

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Fi? 2.Document camera showing adjustable and detachable object board, tilting and adjusting stand, e.c. If much traveling is to be* done with the apparatus, thestand and camera should be of the take-apart kind for con-venience and safety. The camera bed should be marked with indicators, locatingpositions of object, lens and back of camera for different en-largements made by each lense used. (Fig. 2). ^This instrument and the stand were designed by Mr. Albert S. Osborn, NewYork, Examiner and Photographer of Documents. 294
Text Appearing After Image:
Fig. 3.Lighting apparatus, siiowing arc lamp with adjustable stand, adjustable hanging250 Watt Tungsten lamp with Frink reflector, hood placed around object inusing artificial light, white reflector when using daylignt. Illustrating ^article Document Photography, by William J. Kinsley. 295 LENSES. At least four lenses are needed for all kinds of documentwork: one or two inches, four or five inches, eight to teninches, eighteen to twenty inches focus. Most lens makershave lenses especially adapted to document work, for enlarg-ing, color corrected, etc. A greater number of lenses thanfour would be found useful, but are not absolutely necessary.The Bureau of Standards Department of Commerce and Labortests and certifies to correctness of lenses. LIGHTING. For daylight it is useful to have a white reflector to placeon the side of the object away from the source of light. (Fig. 3-) To show erasures by abrasion, indentation, roughness ofpaper; or to light seal impressions, a side light admit

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