(under the class definition) Subject matter including means to record a motion picture sequence at a time rate substantially different from the normal range of such recording rates such that the motion may be reproduced in an altered time relationship by reproducing the sequence at a normal projection rate.
(1) Note. As an indication of the order of magnitudes time compression recording at framing rates less than 1 frame per second, may be termed time lapse cinematography; while time expansion recording at framing rates in excess of 100 frames per second, may be termed high speed cinematography.
