A- The visible
image on the film does not look at all like the photographed
object! It is composed of concentric circles similar to
two or more stones thrown in a pond (figure of interference).
B- When a film is illuminated by a laser ray, a three-dimensional
image of the photographed object appears behind it.
C- If the film is cut into tiny fragments (fig B), each
of these, when illuminated, will still contain all the
information and will still show THE WHOLE IMAGE (even
if it is less detailed).