Viewing Conditions for the Appraisal, by Means of Optical Projection, of Colour Films Intended for Television Presentation: Tech 3091-E, First Edition, September 1970

The appraisal of films intended for the international exchange of programmes for colour television has frequently involved difficulties due to differing standards of performance in telecine channels. Telecine apparatus exists in a wide range of technical specifications which may vary from a highly complex design incorporating many refinements, both colorimetric and electronic, to a simple uncorrected colour analyser and many problems of film quality are ultimately found to be attributable to telecine performance. Difficulties also arise because the majority of interests involved in the production of films, particularly film-processing laboratories, do not have television apparatus and are found to carry out their quality-control under very variable conditions. It is clearly desirable that where a film is a subject of international exchange the successive appraisals of its technical characteristics should be carried out in a standard manner. — In addition to its universal availability, optical projection has many fewer variables than a colour television system and, until a worldwide standard for telecine performance can be realised, it is to be preferred for appraisal purposes.

Print ISSN
Published
1971-02
Content type
Original Research
DOI
10.5594/J13528