
A shallow cut in the edge of a section of film for printing that actuates the light-change mechanism in certain types of film printer, thus printing the section at the required density and/or colour. 1
Light notches should be 5 1/2 frames from the change of scene (before or after depending on whether printing from head or tail).
1 The Focal Encyclopedia of Film and Television Techniques
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.