Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000130
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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114 LIGHT CONDITIONS the ordinary, the high intensity, the reflector, and the sunlight, differ in their light tones, and all of them differ from the light tone of the incandescent lamp. They also differ in brilliancy and degree of whiteness, for a light that shows up quite well on a dull, dingy screen, will be harsh and glarey on a clean, bright surface. In an emergency, the change from D.C. to A.C. may produce an unpleasant effect on some types of screens. This trouble cannot be helped if the light and lenses are in perfect order. 13. Glare Spots Show Up (a) — An impression of glare is caused by the highlights in an over-brilliant picture, which has a great contrast between the highest lights and the deepest shadows. The light brilliancy should be reduced when these scenes are again shown. (b) — A highly reflective surface is throwing the reflection of an adjacent light upon the screen. If this is so, look for the following as sources of this trouble : 1. A door which leads into a room having a bright light or a mirror in line with some part of the screen may be open. 2. A glossy wall and reflected wall lights may be the cause. 3. The musicians' lights may be reflecting from their music onto the screen.