A Note on the Processing of Eastman 1302 Fine Grain Release Positive in Hollywood

V. C. Shaner

A brief historical résumé is given of a series of fine-grain films that have been put upon the market during the past four years. This series of fine-grain films culminated with the acceptance of Eastman 1302 fine-grain release positive at one Hollywood laboratory to the exclusion of regular positive of the 1301 type for release printing. Experimental data are presented to show the comparative sensitometric characteristics of fine-grain positive 1302 and regular positive 1301 at various pH values and potassium bromide concentrations typical of Hollywood positive developers. A basic positive developer formula derived from chemical analyses of every release positive developer in Hollywood was used in the experimental work. Some practical facts are discussed, based upon the experiences obtained from the initial use of the fine-grain film in Hollywood.

Print ISSN
Published
1942-01
Content type
Original Research
DOI
10.5594/J09938