Richardson's handbook of projection (1927)

Page scan 000161 from Richardson's handbook of projection

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000161
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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MANAGERS AND PROJECTIONISTS 010 WHY CONTROLLERS SHOULD BE USED.— A further definite statement of why arc controllers should be used is perhaps in order. In the first place, if a hand-fed arc be used, in order to secure maximum results ki evenness of screen illumination, and maximum returns in screen illumination per k. w. of energy expended, it is absolutely essential that the projectionist remain constantly beside the projector, feeding the carbons a very little at a time, and very frequently — iu fact, every few seconds. In no other possible way can a perfect centering of the spot at the aperture be maintained. As a matter of fact not one projectionist in a hundred fulfills this condition. This is sometimes due to the fact that the multiplicity of duties imposed upon him by the theatre management will not admit of his doing it. In other cases he does not do it because he is just too careless or too lazy, 2<^l7Ja»k;t2 Plate I, Figure 211.