Image forming materials

A photographic image is comprised of small discrete particles of dye, silver metal or silver compound held in suspension in the gelatin binder.

This chapter contains pages on Chromogenic dyes, Silver and Tint, tone and other colour processes.


  • Theory of the Photographic Process, 4th Edition; Macmillan
  • G. Haist: Modern Photographic Processing Vol 1; Wiley
  • ANSI/ISO 417-1993 Standard, Methylene Blue Test
  • ANSI IT9 11-1993 Standard Processed Safety Photographic Films – Storage
  • Tinting and Toning of Eastman Positive Motion Picture Film; Eastman Kodak Company; 1922
  • B. Happe; 80 Years of Colour Cinematography; BKSTS, 1984