Integral tripack reversal colour film process, normally used for motion picture work in the 16mm form. 

Ektachrome® originals are not intended for direct projection or viewing but as a source material from which prints may be made, either directly on to another reversal stock or by way of a colour dupe negative on to colour positive film (Spottiswoode 1969). A feature of this film is that it is processed by laboratories other than Kodak.



1969, The Focal Encyclopedia of Film and Television Techniques, Focal Press, London, New York