Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000142
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 15, 2024
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126 STERE0PT1C0N TROUBLES same slide in testing both of the elements, otherwise all of the tests will be worthless. 5. Stereopticon Device Shows Break in a Condenser, Although Projector Does Not (a) — This is a natural condition, for the stereopticon condenser is right up against the slide and any imperfection in it is focused right along with the slide and is thus projected. In the projector, however, the condenser is not focused, for its light, and therefore its defects, are focused on a different plane from that in which the film is focused. 6, Shadow of Carbons and/or Holders Appears When Using Reflector Arc for Stereopticon (a) — Undoubtedly, the manufacturer's instructions have not been followed concerning the method of shifting over the lamphouse, and therefore, the system is not in correct position. In this type of device, the mirror and the slide position must be altered according to the method given by the manufacturer, else the carbon shadow will be projected, and, sometimes, even the full image of the carbon and its holder. (b) — When the device is properly adjusted, that is, when, in order to prevent the carbon image from showing on the screen, the condenser is off the center, there are prisms provided for returning the