Servicing projection equipment (1932)

Page scan 000120 from Servicing projection equipment

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000120
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
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

104 FOCUS the focus under these conditions, by having an assistant in the house when no show is on, will enable the projectionist to create a system of focus-compensation which will eliminate this trouble. The assistant should note when the focus is sharpest in the auditorium and the projectionist should mark the positions of the lens adjustments and in the future make mental allowances for this focusing. By slightly adjusting the lens according to a comparison of the projection room test results with the auditorium test results, a fair degree of accuracy can be secured. The use of a good lens and plenty of light will also help to remedy this difficulty. 3. Focus Bad, Out of Focus, In-and-Out Effect (a) — These troubles may be due to the following conditions: 1. Old, shrunken film, which causes buck ling. If such film must be used there is no remedy for this trouble. 2. Badly worn aperture plate tracks. Ad just the tension on the tension shoes, the film pad, or the springs. Inspect them, and if they are worn, they should be replaced. 3. Dirt and emulsion have been deposited in the aperture or on the tracks. Clean these, but do not use a sharp-edged tool