Movies for TV - Early Television Foundation

PRINCIPLES OF MOVIES 23
floor manager The director's link with the actors during shoot-
ing. He can signal to the actors to tell them to hurry, slow,
close up, spread, etc.
floor plan A scale diagram of the floor space showing the posi-
tions of the scenery and actors for various sets. It is an essen-
tial to the proper planning of a shot.
fluorescent light Mercury-vapor tubes coated inside with one of
a number of materials which fluoresce, or glow, when exposed
to the discharge inside a mercury-vapor tube.
flutter An annoying, continuous change in the sound reproduction
from a film or mechanical recording. It is usually caused
by wear in the rollers which hold the film against the sound
head, or play in the bearings
if discs are used.
focus The point where the rays of light passing through a lens
meet and form an image on the film or mosaic.
following focus The process of keeping a moving object in focus
all the time it is moving about during the shooting of a scene.
For example, an actor may have to go from down stage to
up stage and remain in focus all the time; the cameraman
follows the action in his view finder and is thus able to keep
the actor in focus by adjusting the focus control.
foot candle The international unit of illumination. It is the direct
illumination on a segment of a sphere one foot away from a
point source of one foot candle. It is equal to one lumen per
square foot.
frame One complete picture. In movies, to form the illusion of
movement and to obtain a high enough rate of speed to
provide high quality of sound, twenty-four frames a second
are projected.
foundation light The same as ambient light: a general lighting
which has no character of its own but serves as a basal
minimum upon which the rest of the illumination is built.
free perspective Falsely converging lines on the scenery and
painting, or actual scenery constructed so as to converge
much more rapidly than normally to provide a feeling of
depth.