BS ISO 4241:2019 pdf free.Cinematography一Projection film leader (time-based), trailer and cue marks - Specifications. Orientation and dimensions of letters and numerals in this document are with respect to 35 mm motion-picture films and are modified proportionally in accordance with ISO 4238 for 70 mm and 16 mm prints. .Information appearing in the leader which is printed lengthwise (in the direction...