Servicing projection equipment (1932)

Page scan 000122 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000122
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
Date Added:
May 15, 2025
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106 LIGHT CONDITIONS LIGHT CONDITIONS AND THEIR EFFECT ON THE SCREEN 1. Blue Spot in Picture or in Light in Center of Screen (a) — This may be due to a faulty alignment of the light source and the collector. The condenser may be too close to the aperture, or the crater is advanced too close to the condenser. Note which of these is at fault and readjust it. 2, Definition of Picture Poor (a) — This may be due to slight unintentional misadjustment of focus, which should be corrected if found at fault. (b) — A discoloration of the condenser which is reducing the clearness of the light, may cause an effect which gives the impression of poor definition. Note if the condenser has become discolored, and if it has, try changing the condensers. (c) — A cheap lens, a poor lens made of low grade optical glass, or a lens which has been ground imperfectly, are some of the common reasons for