Handbook for motion picture and stereopticon operators (1908)

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 #:
00039
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
Description:
Date Added:
November 16, 2023
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Operator's Handbook 33 ing rack and hung up, in a draft of air, preferably, to dry. In all the operations care should be exercised to see that the gelatine is not skinned or knocked off. Temperature. The temperature of the dark-room should be maintained at about 65° Fahrenheit, and the developer, when poured into the tray, should not be too cold in winter or too warm in summer. Do not develop in ice water and then wash in warm water. The best temperature for all around work is 65°. The Chemicals. Two chemical compounds enter into the matter of development, the developer (pyro, for instance) and the accelerator (an alkali). For a normal exposure a certain given amount of each diluted with a certain amount of water produces the best result. An excess of developer will give hard contrasts, although advantageous to use for an overexposure ; while an excess of alkali gives more softness and detail in the shadows and is therefore advantageous for an underexposure. Giving the film a preliminary bath in an alkali before development is sometimes resorted to for an underexposure, while the use of old solution retards development ancl is recommended for overexposures. An excess of water also checks development and