Display enlargements from single frame motion pictures

✍ Scribed by K.C.D. Hickman

• Publisher: Elsevier Science
• Year: 1926
• Tongue: English
• Weight: 46 KB
• Volume: 202
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(26)91730-4

✦ Synopsis

THE highest quality enlargement obtainable from a single motion picture frame cannot be secured unless the following precautions in descending order of importance are taken: (I) The light source must be highly diffused. (2) The last diffusion screen must be as near as possible to the negative. (3) The negative must be placed between glasses quite free from defects and dust. (4) The negative may be embedded in a liquid of the same mean refractive index.

The paper describes methods of sandwiching the film with glycerin or xylol between glasses before placing in the projector.