The Duplication of Motion Picture Negatives
In 1926, Capstaff and Seymour1 published a paper giving directions for making duplicate negatives using a new film manufactured specifically for that purpose. Good quality and tone reproduction were possible by this method although the graininess of exhibition prints was not entirely satisfactory. — Since then, improved films have been available, and the present paper contains a description of the tests performed during a search for the most satisfactory sensitive materials and processing technic. The experiments showed that in order to minimize graininess, the master positive must be developed to a relatively high gamma (1.85) in a positive developer, and the duplicate negative to a correspondingly low gamma (0.55 or less). There are also given data which explain why the high gamma master positive in conjunction with a low gamma duplicate negative gives the most satisfactory graininess.
- Print ISSN
- 0097-5834
- Published
- 1932-07
- Content type
- Original Research
- DOI
- 10.5594/J05502