Practical cinematography and its applications (1913)

Record Details:

Title:
Practical cinematography and its applications
Date:
1913
Publisher:
Philadelphia, Lippincott
Volume:
Practical cinematography and its applications
Leaf #:
000111
Language:
English
Collection:
Books
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
14
Date Added:
July 19, 2022
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74 PRACTICAL CINEMATOGRAPHY Development proceeds exactly as in the case of a glass plate, and the same judgment is required to determine when the process has been carried far enough. When this point has been reached the frame is lifted out of the developer and placed in the rinsing tray to receive a thorough washing. Water is a kind friend in cinematography and should be used ungrudg- ingly. Three or four thorough flushes will suffice to rinse the film satisfactorily, and then the frame is placed in the fixing bath. This is made up as follows :— Water Hyposulphite of soda Sulphite Avoirdupois. 64 oz. (fluid) 16 „ Metric. 2,000 c.c. 480 grammes 22 When fully dissolved add the following hardener. Powdered alum Citric acid Joz. 15 grammes 15 During fixing the frame should be kept rocked so that every trace of undeveloped silver salts may be removed from the film. Then it is transferred to the washing tray and submitted