https://www.nfsa.gov.au/sites/default/files/2025-02/Colour%20TV%20Mega%20Menu%203%20TVs_1000x745%20px.jpg
Lenticular color
Additive system of colour photography which made use of a black and white film stock, the base of which was embossed with a very large number of minute lenses or cylindrical ribs. When exposed through the base using a camera lens fitted with a banded three-colour filter, the image was recorded as a number of colour separation elements which, after a reversal processing, could be projected through a similar lens and filter to produce the original colours.
References
1969, The Focal Encyclopedia of Film and Television Techniques, Focal Press, London, New York
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