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Technical Information bulletin for "West Side Story"
|Read more at|
The 70mm Newsletter
From the Rayton collection, written by: United
Technical Information bulletin From United Artists Corp. For the
Technicolor® Panavision 70® release of the Beta production "West Side Story".
THE PRESENTATION of our picture "West Side Story" may find you faced with 70MM
release problems for the first time.
In order to assist you in the installation of 70MM projectors, as well as
screens, screen masking, and sound considerations, the engineering
department of United Artists has compiled technical information data in this
brochure for your convenience.
An outstanding feature is the screen chart which will facilitate the
selection of proper focal length lenses for your screen size, all computed
for the new 70MM projection aperture. A selection of easy-to-use formulas has also been provided in case your theatre requires
deviation from the screen chart.
A drawing showing the recommended aperture
for 70MM projection has been included, as well as a drawing showing the
sound track placement for the six magnetic tracks. We have also sup-plied information about the sound track, speaker arrangements, and theatre
In "West Side Story" we are delivering to you unmatched entertainment on the
finest release prints ever made. No amount of effort or expense was spared
to achieve these goals.
This motion picture deserves the finest presentation possible. We hope this
technical bulletin will be of assistance.
PDF: Technical Information bulletin for "West Side
|More in 70mm reading:
PDF: Technical Information bulletin for "West Side
Original 6-track Mix
Recovered and Restored for West Side Story
Introduction to "West Side Story"
This was a thrill
Projection, sound and curtain cue
sheets for "Exodus"
70mm Presentations -
Letters from Directors
2001: A Space
Odyssey Essential Presentation Procedure
you will undoubtedly have your own rehearsals with the picture
before your first public showing, the following procedure has been found
most ideal for the presentation of the picture and should be followed as
closely as possible.
A special design has been created for the beginning of
the picture over which the overture is played.
It is of vital importance
that the first 4½ minutes of this design be projected with the house
lights lowered by only 25%.
For the proper presentation, please follow these
From the start mark the first 28 feet of the reel is black.
Over this, from the surround horns only, comes the sound of 3 separate
The first whistle starts at 12½ feet. At this point the curtains
should be opened slowly and the house lights lowered by 25%. Since the time
required for opening curtains varies from theatre to theatre it must be
timed so that these operations are completed by the time the overture design
fades in at 28 feet.
NOTE: If any of the house lights are directed on the
screen, it is necessary that these lights go out completely by 28 feet or
they will wash out the design when it is projected on the screen.
At 414 feet from the start mark, when the red color dissolves to the
blue, the house lights should be dimmed completely or to the level at which
the picture will play. This operation must be completed by the time the
title "West Side Story" starts to appear on the screen.
It is most important
that the opening is handled in this fashion. If it is not, if the house
lights are dimmed all the way at the beginning, the audience will expect the
actual picture to start much sooner than it does.
If the opening design is played with the house lights well up the audience
will accept the music for what it is - the overture.
Please be good enough not to start closing the curtains with the appearance
of "The End" title on the screen. There are still 5 minutes of end "credits"
to be shown before the picture is completed.
The screen chart on the opposite
page is especially calculated for the 70MM
projector aperture of 1.913 x 0.868 inches.
The aspect ratio is 2.21 to 1.
This aperture was established by
Todd-AO and is now a recommended SMPTE
The table shows picture widths - in the left and focal length of
lenses in the top column. The figures in the table are -- distances from
projector aperture to center screen in feet.
The table below lists picture
height to corresponding picture width based on a 2.21 to 1 aspect ratio. To
the right of the main chart is an additional small table to relate corresponding focal length in millimeters to dimensions in inches-just for
Even though the tables are self-explanatory, for the
calculation of specific installations, with given lenses, screen sizes, and
throw, the usual formulas can be applied using the dimensions of the 70MM
the focal length lenses listed in the top column are all available through
Panavision, Inc., 1917 Pontius Avenue, West Los Angeles, Calif., and are
lenses especially designed to cover the 70mm aperture. Only such lenses
should be used.
Do not project 70mm prints with lenses only suited for 35mm apertures
- even if they have a 4" O.D.
Do not project 70mm prints by using supplementary lenses, lens
attachments, or focal length converting devices.
THEY ALWAYS DETERIORATE PICTURE QUALITY AS COMPARED TO LENSES DESIGNED FOR
Picture Research Council, Hollywood Calif. 70mm test film chart
A 70MM projector alignment film with a test chart as shown below,
should be used to check lens performance for cleanest and sharpest picture
This test film is available through supply houses and shipped
with instruction sheet for its use. It can also be ordered from SMPTE, 55
West 42nd Street, New York 36, N. Y.
coating and track placement dimensions for 70mm release film
It is understood that the sound system for six-channel sound reproduction,
as established for 70MM release prints, is generally handled by service
organizations. We think, however, that it will be appreciated within the
scope of this bulletin to publish the engineering facts on the six magnetic
sound tracks on 70MM release film.
As can be seen in the drawing above, the tracks are numbered from 1 to
6 - going from left to right if the film is placed with the magnetic coating
up and the emulsion down.
The tracks shall be used as follows: (with the
listener facing the screen)
TRACK 1 for the left speaker - TRACK 2 for the
left center speaker - TRACK 3 for the center stage speaker
TRACK 4 for the
right center speaker - TRACK 5 for the right speaker - TRACK 6 for the surround
or auditorium speakers.
The recording and reproducing speed shall be 24
frames (5 perforations) per second - representing exactly 120 perforations per
second or 112.2 feet per minute.
The center of the picture shall precede the
corresponding sound by a distance of 24 five-perforation frames.
again be noted that the above specifications have been established by
TODD-AO and are in accordance with their presently used process.
with the specifications for 70MM composite film sound as outlined by the
TODD-AO Corporation, we likewise require the theatre sound equipment to fulfill the following specifications:
1. The frequency response as measured on theatre
equipment should be:
50-8,000 cycles flat within plus or minus 1/2 db.
40-12,000 cycles flat within plus or minus 1.5 db.
2. Cross talk between channel ... minus 40 db. at 1,000 cycles.
3. Signal to noise...55 db.
4. Wow and/or flutter not to exceed 0.2 of one per cent in a band width
between 2-200 cycles.
5. Preamplifier distortion not to exceed one per cent when operated at a
level of 12 db. above the level from magnetic film recorded at three per
6. Power amplifier distortion not to exceed two per cent at rated output
of the amplifier between 50 and 12,000 cycles.
7. Speakers and power amplifiers should be of such power rating that any
single track can properly fill the auditorium's acoustical needs.
necessary test films for checking 6-channel magnetic sound installations, as
specified above, are available through the TODD-AO Corporation, West Coast
Division, 1021 North Seward Street, Hollywood, California.
It is hoped that
the submitted technical information will be helpful and appreciated as a
guidance to achieve top performance and highest quality for picture and
sound in releasing our magnificent picture
"West Side Story"
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