Photometric determination of camera exposures for motion picture work

✍ Scribed by Alan M. Gundelfinger; Jerome W. Stafford

• Publisher: Elsevier Science
• Year: 1933
• Tongue: English
• Weight: 700 KB
• Volume: 215
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(33)90143-x

✦ Synopsis

A photometric method for the determination of camera exposures in motion picture work is described.

The relation of exposure, object brightness and lens stop number is derived, and the proportionality constant empirically determined for "Pan Astro" lenses of two-and three-inch focal length.

A nomographic chart of the exposure relation is given to simplify the determination of the lens stop number to be used for a given object brightness.

INTRODUCTION.