https://www.nfsa.gov.au/sites/default/files/2024-12/354298_1006%20Don%27t%20Ask%20poster_1000x745%20px.jpg
Sync mark
Frame mark on lace-up leader of image and sound negatives to enable printing to be ‘in sync’. Also zero point for FCC counts.
https://www.nfsa.gov.au/sites/default/files/uploads/2010/08/31/sync.gif
References
Case, D., 1985, Motion Picture Film Processing, Media Manuals, Focal Press, London, Boston
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.