The principles of image recording
Image by image recording used a door which is a mechanical or electronic
shutter that opens and closes on the subject (figs A and B). The moving
subject is therefore captured in a geometric space outside time. A rapid
succession of such images is produced by cinema or television. Between
the images, there is a temporal memory gap, in other words an absence
of information. These gaps are filled by retinal persistence, helped by
our memory or subjective imagination.