Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000127
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:
March 28, 2024
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LIGHT CONDITIONS 111 (c) — The optical train may not be properly aligned and, therefore, the light is being wasted. This should be corrected. (d) — There may be some dirt and oil on the lenses. These should be cleaned. (e) — The lenses used are not suited to prevailing conditions. Consult the lamp maker's suggestions as to the proper optical conditions and secure the correct lenses. (f ) — The optical system is improperly spaced and therefore the full advantage of the light is not being taken. This should be tested and corrected if necessary. (g) — The shutter employed may be of the wrong type, thereby cutting off too much light. If this is noticed with a three-winged shutter, try a two-winged shutter properly set and adjusted. (h) — The mirror may not be properly set in order to give the fullest light compensation. This should be tested and adjusted. (i) — The lamp filament has been short-circuited or warped out of alignment and therefore the light has been decreased or wasted. Examine the lamp, and if this is found to be the trouble, replace it. (j) — The condenser is not properly adjusted in relation to the mirror and to the balance of the optical train. Test this and correct the adjustment.