These are tri-separation positives of the Australian Colour Diary series which were produced by Mr J S Allan between 1954 and 1973. The Australian Colour Diary series was made along the same lines as the "Australian Diaries" (b/w) which had been produced on a regular basis from 1946 onwards. The diaries ran approximately 1,000 feet, generally lasted about 10 minutes and contained a number of newsreel type items. They were featured regularly on the Hoyts circuit in Australia and were shown in New Zealand, the United Kingdom and elsewhere, as well as on television in the United States of America.
 
Tri separation positives were made, largely contemporaneously with the actual productions to ensure presentation of colour film. For each production there are three separation positives, made on black and white film, through cyan, yellow and magenta filters. From these, a composite colour print of the film may be reconstituted as required. The inter-positives were made from the original negatives. Duplicate negatives can be made from these to be used to make release prints.

This series contains audiovisual formats. As audiovisual formats are either redundant or susceptible to deterioration, some items in this series have been copied to ensure their preservation. Preservation copying involves the creation of preservation, duplicating and reference copies. These copies can be found in the following series:

Preservation copies: C5421, Video preservation copies of C26, Film Australia "Australian Colour Diaries"

Related series unregistered

Film production files, single number series with FP prefix, c 1945-
 1965 (see SP1265/1)
Film production files, annual single number series with FP prefix,
 1965- , (see SP1265/2)
General correspondence files, 1947- (see ST3469)