Movies for TV - Early Television Foundation

larger crew required,
MOVIE-MAKING EQUIPMENT 75
but twice as much film is needed. The fact
that sound film such as Eastman 5372 sound recording film is
about half as cheap as ordinary film saves a lot of money, but even
so it is about $16 per thousand feet. And, if color film is being used
the extra cost of the color film plus the sound film increases the
over-all price considerably. As a matter of fact, single system
sound recorded on Kodachrome film is often better than recording
made on black and white film.
Auricon Sound Recorder Illustrated in Figure 3-14 is the
Auricon portable sound recorder. This is a very small and compact
piece of equipment which operates with any camera forming a
double sound system. Any of the cameras already described will
work with it, provided a synchronous electric motor is used to drive
it and both it and the camera are blimped, so that the sound of its
mechanism will not be picked up by the microphone.
Lab Test Most recording amplifiers similar to the Auricon
have a lab test button. This is used to reverse the noise reduction
bias and open the galvanometer to make a wide sound track. The
microphone input is turned to zero during this test. The sound track
becomes twice as wide and should be clear from side to side. It is
used by the processing laboratory to measure emulsion density so
as to enable the operator to determine the proper developer strength
and time. It is only of value in the case of negative sound tracks.
The container must be marked to inform the laboratory that a sound
test exposure has been made. It usually occupies the first eight feet
of the film.
An interesting point arises in connection with double system
sound recording on film. If the camera film is negative, then B-wind
film, i.e.,
film wound so that the emulsion side faces to the center
of the spool when the perforations are on the right side and the out-
side end is at the top, is used. If direct-reversal film is used, then
A-wind, with the emulsion on the inside when the perforations are
on the left and the outside end at the top, is used. If this precaution
is not taken, it will be found that when the two films are married