Practical cinematography and its applications (1913)

Page scan 000120 from Practical cinematography and its applications

Record Details:

Title:
Practical cinematography and its applications
Date:
1913
Publisher:
Philadelphia, Lippincott
Volume:
Practical cinematography and its applications
Leaf #:
000120
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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PRINTING THE POSITIVE 83 for taking photographs. As the emulsion side is uppermost, when the unexposed film meets the negative in the gate, the two films are brought together with their emulsion sides in contact. As one film is laid squarely over the other, and with the perforations in line, it will be seen that the claws engage with both, so that the two films are jerked together intermittently through the gate. Emerging from the gate the two films part company. The exposed positive ribbon passes into the exposed dark box, while the negative film passes through another velvet-lined slot in the bottom of the camera, and then is wound up on another spool. It will be seen that in this case printing is carried out in a manner similar to photographing. The film is run through the camera in the ordinary way by turning the handle, and the number of exposures per second can be varied within wide limits to suit the density of the film. The camera is supplied with a second spindle and gearing upon which the handle may be slipped. The ratio of this gearing is one exposure per revolution, or as it is termed " one turn per picture*" Owing to the positive film being contained within the camera, and therefore in a light-tight space, the electric light or other illuminant may G 2