Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000415
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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.

398 DUNDON, BROWN, AND CAPSTAN DR. DUNDON: It may be that the term "exposure" is not technically correct. In measuring this effect, we took the speed reading on the H & D curves as is customary, and when this H & D curve shifted one step on the 0.3 density tablet, we said that it showed one-half the exposure or speed. In some discussions of this matter it has been called a loss of speed. Actually, it is loss of latent image. If we use the old developer all the latent image does not come up and, measuring it in the ordinary way, the film has only half the speed that it had originally. MR. TAYLOR: Some one else at another time may use "loss of speed." I noticed also that once or twice you said "apparent loss of exposure" or "effective loss of exposure," which might be the better term. DR. DUNDON: Perhaps this nomenclature might be used more uniformly. However, when the camera man sets his exposure from a test film developed in a fresh developer and then shoots his picture and has it developed to the same gamma in an exhausted developer, it is under-exposed. This is due to the characteristics of the exhausted developer.