Handbook for motion picture and stereopticon operators (1908)

Page scan 00032 from Handbook for motion picture and stereopticon operators

Record Details:

Title:
Handbook for motion picture and stereopticon operators
Date:
1908
Publisher:
Washington, D.C. : The Knega Company, Inc.
Volume:
Handbook for motion picture and stereopticon operators
Leaf #:
00032
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
May 02, 2025
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2G Motion Picture lens, each requiring twice the exposure for the next larger, thus, \, -J, T\ , ^ etc. The Light. In order to more surely get a proper exposure at all times, it is well to remember that: a seascape requires the quickest exposure ; that an open landscape requires about three times as long ; that foreground, nearby objects, buildings, etc., about six times ; portraits inside under good light about one hundred times; that the light in June is about four times as effective as it is in December; that the light from 10 a. m. to 2 p. m. is more than twice as actinic as it is from 4 to 6 o'clock; that the speed of the shutter must be quickened inversely as the distance to the object photographed, the latter having a given movement; and that a large lens is not more rapid than a small one if the proportion of diaphragm to focus remains unchanged. Tele-Photo Lenses. Some interesting results have been achieved in moving pictures using tele-photo lenses. The method is not recommended except where it is impossible to obtain the same result in the ordinary manner.