File:The American annual of photography (1912) (14765719265).jpg

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English:

Identifier: americanannualof1912newy (find matches)
Title: The American annual of photography
Year: 1912 (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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About This Book: Catalog Entry
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Text Appearing Before Image:
be necessary to rack in the camera very slightly after focusingand before exposure to an extent readily found by experiment.The exposure with a telephoto lens is ascertained by multi-plying that which would be needed with the positive lensalone by the square of the magnification. Thus, suppose theexposure without the telephoto attachment would be 1/80 of asecond, and the magnification with the attachment is fourdiameters. The exposure will then be 1/80X4X4 =16/80=^1/5 second. But when the portion of the subjectthat is enlarged consists mainly of distance a shorter time maybe given, following the usual rule that distant objects requireless exposure.
Text Appearing After Image:
INTERESTED. SAMUEL DORAN. 20

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https://www.flickr.com/photos/internetarchivebookimages/14765719265/

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Volume
InfoField
1912
Flickr tags
InfoField
  • bookid:americanannualof1912newy
  • bookyear:1912
  • bookdecade:1910
  • bookcentury:1900
  • booksubject:Photography
  • bookpublisher:New_York___Tennant_and_Ward
  • bookcontributor:Harold_B__Lee_Library
  • booksponsor:Brigham_Young_University
  • bookleafnumber:47
  • bookcollection:americana
Flickr posted date
InfoField
28 July 2014

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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14765719265. It was reviewed on 15 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

15 September 2015

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