61 HOURS OF CONSTRUCTION RECORDED ON 10 MINUTES OF FILM

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B05708A000400020001-7
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 8
• Document Creation Date: December 23, 2016
• Document Release Date: January 16, 2014
• Sequence Number: 1
• Content Type: OPEN SOURCE

Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A0100406020Cf01-7
61 HOURS OF
CONSTRUCTION RECORDED
ON 10 MINUTES OF FILM
One of the most unusual jobs that
we have done was to set up time lapse
cameras to record 61 continuous hours
of construction.
California Structures, Canoga Park,
Calif., was awarded a contract to add
9 floors on top of the existing 1 story
office of Valley Federal Savings Bank,
Van Nuys, Calif. In order to add ad-
ditional stories, support columns would
have to be placed in the ground floor.
The existing office floor would have to
be torn up, 12 holes, 44 ft. deep, 3 ft.
in diameter with 12 foot bells would
have to be dug; and each hole rein-
forced with steel. But this wasn't
'enough. At no time could the bank be
closed during regular business hours.
Thus it was decided to do it over a
wekend. At 6:00 P.M. Friday, the
furniture and fixtures were moved out.
At 622 P.M. the construction people
moved in with special saws, jackham-
mers and a specially modified drilling
rig.
Previously, California Structures had
contacted us with the desire to record
on film the entire weekend operation.
The reason they wanted this record
was to have documentary evidence of
their efficiency in scheduling, as the
entire job was scheduled minute by
minute, all in advance.
At the end of the room we set up
our time lapse cameras. A Mitchell
16mm with a 5.7 Tegea Lens f/1.8
and 1200 foot magazine. In addition a
35mm still camera was used. Both
cameras were coupled to a special
Gordon Enterprises designed intervalo-
meter. The Mitchell shot one picture
every 10 seconds and the 35mm one
picture every 30 minutes. The cameras
were not touched during the entire
weekend, and only existing light
sources were used.
The job was completed 21/2 hours
ahead of schedule early Monday morn-
ing. The cameras had run continuously
since Friday evening, and were finally
stopped at 8:30 A.M. Monday. The
entire 61 hours of construction were
condensed into only 10 minutes screen-
ing time.
Bob Kuhagen
Continued from page 2
Active outside interests include en-
thusiastic participation in the sport of
bowling. Bob is a member of the
Society of Photographic Instrumenta-
tion Engineers, and has been a mem-
ber of other prominent photographic
societies, both in Chicago, Washington
D.C., and Los Angeles.
GORDON TO DISTRIBUTE
GRAPH-CHECK SEQUENCE
CAMERA
We are very happy to announce that
we are now distributing the Graph-
Check Sequence Camera in the 11
Western States. The Graph-Check is
designed to make possible photogra-
phic analysis of high sped motion, 10
seconds after the photograph has been
taken. It is built around a Poloroid
Land Film Holder, and has 8 separate
lenses, each with its own shutter. Each
shutter clicks in automatic pre-set se-
quence at 1/1000 of a second, and all
8 pictures may be taken in as little as
1/10 of a second or extended to a
maximum of 10 seconds. The finished
photo is an 8 frame, 4x5 picture, ready
to view in 10 seconds. The camera is
very simple to use, having only 2 con-
trols, one for exposure, and one for
regulation of sequence duration. Stand-
ard Poloroid Land 4x5 film is used,
which is available in single packet
form. The camera is small enough to
be carried around easily, weighing
only 5 lbs., and measuring 51/2" high x
23/4" wide, x 11" long.
Continued on page 4
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
O'CONNOR FLUID CAMERA HEAD
Type 200-A
The O'Connor Fluid Camera Head, Model
200-A, was designed to provide perfectly
controlled pan and tilt action for the most
difficult photographic applications. The unit
is especially compatable for use with heavy
television and motion picture cameras
weighing up to 200 pounds. Tracking of
objects moving at high speeds, such as
missiles, is accomplished with smooth, con-
tinuous action and perfect control.
The adjustable drag may be independently
set for both pan and tilt action'. In addition,
a full mechanical lock "freezes" the pan or
tilt action as required for the particular
type of shooting being done. Finger-tip
locking action is also provided for both
functions. Counterbalanced design of the
-"tilt" function of the head compensated foi--
the weight of the camera. Smooth opera-
tion is further assured through the use of
pre-loaded ball and roller bearings which
are incorporated into all moving parts. The
entire assembly is mounted on Timken
bearings for full freedom of action. Full
fluid action operates from below zero tem-
peratures up through 120 degrees F.
Additional operational features include a
built-in override to insure quick returns on
both the pan and tilt actions, and full
weatherproofing against water, dust and
sand by use of Buta-N "0"-ring seals. The
operating handles are interchangeable, left
and right, for full operator convenience,
and all the finest high-strength aluminum
alloy and steel parts assure trouble-free
service. The manufacturer offers a full 5
year guarantee, backed up by Gordon
Enterprises.
SPECIFICATIONS:
Dimensions:
Weight:
Tilt:
Level:
8" high x 12" wide.
32 pounds.
Head tilts to within 15 de-
grees of the vertical in both
directions. (Minus 75 degrees
to plus 75 degrees).
Built-in precision bulls-eye
with a guaranteed accuracy
of 30 mm. of arc.
Camera Mounting: Pop-up camera tie-down screw
with bevel gear drive for ease
of tightening.
The O'Connor 200-A Head is furnished
with Mitchell Standard or O'Connor "level
head" bases. An extra handle is supplied for
"handle-bar" operation.
gordon enierprises
410
SC .P 17.1.11
GE-43997-4
de World
5362 NORTH CAHUENGA BOULEVARD NORTH HOLLYWOOD CALIFORNIA ? PO lar 6-3725
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
gordon enierprises
NORTH HOLLYWOOD CALIF CABLE GORDENT
SERVING THE WORLD
5362 CAHUENGA BOULEVARD
NORTH HOLLYWOOD, CALIFORNIA
TELEPHONE [phone]
Gordon Enterprises is pleased to announce its association with Gamma
Scientific, Incorporated, as sales representative for the A-500 Luminance
Analyzers.
We feel that these spot photometers are new and practical tools for the
critical control of light in photography, and television.
For you, their accuracy and versatility can mean improved product quality
at a lower production cost.
On difficult assignments they can give you the extra information that makes
the difference.
We would appreciate an opportunity to demonstrate the A-500's to you and
discuss their application to your problems.
WATCH FOR THESE ADVERTISEMENTS IN LEADING TECHNICAL TRADE JOURNALS
ANNOUNCING! ANNOUNCING! ANNOUNCING!
New Tool To Solve Critical NEW TOOL TO SOLVE NEW TELEPHOTOMETER
Lighting/Exposure Problems TV LIGHTING PROBLEMS FOR LUMINANCE ANALYSIS
For difficult assignments with no second chance,
the A-500 Luminance Analyzer arms the pro-
fessional photographer with accurate, complete
pre-exposure information in 30 seconds. It
measures over-all scene brightness range and
the relationship of any scene element to this
range. Also, it simultaneously computes exposure
on the exact constant density principle. This
high-definition spot photometer features 1/20
acceptance angle (1/4000 typical scene) ...
accuracy of -?0.1 log ... adjustable spectral
characteristics for film or eye ... exceedingly
low flare. ..no polarization error. Write for details.
!)GAMMA SCIENTIFIC, INC.
5841 Mission Gorge Road, San Diego 20, Calif.
Now used by major TV networks and stations in
U.S. and abroad, the A-500 spot brightness meter
permits fast analysis of any TV lighting problem.
Features 1/20 acceptance angle-1/4000 typical
scene. Selectable color response?film, TV, eye.
Applications include rapid, accurate measurement
of scene luminance (brightness) ratios, lighting
balance, screen brightness, costume and scenery
reflectance, and kinescope brightness and
contrast. Two versions: A-500 fL for measuring
footlamberts and A-500 EC with integral exposure
computer. Write for brochure.
GAMMA SCIENTIFIC, INC.
5841 Mission Gorge Road, San Diego 20, Calif.
With the new A-500 fL Luminance Analyzer, you
can measure brightness ratios and footlamberts
anywhere with ease and speed never before
possible. This photomultiplier telephotometer
features 1/20 acceptance angle . . photopic
spectral response ... direct reading of ratios
... integral computer to convert readings to
footlamberts. Measures 0.3-20,000 ft-L without
drift adjustment?without warmup. No polariza-
tion error. No focusing. Exceedingly low flare.
Write for full details.
',GAMMA SCIENTIFIC, INC.
5841 Mission Gorge Road, San Diego 20, Calif.
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
A-500 LUMINANCE ANALYZER
A-500 LUMINANCE AN ALYZER
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
GENERAL CHARACTERISTICS The A-500 Luminance Ana-
lyzer is a high definition spot photometer. Its acceptance
angle is 1/2 degree (a circle 1 inch in diameter at 8 feet).
A photomultiplier tube is used as sensor because of its:
1. Extreme sensitivity.
2. High stability and low fatigue characteristics.
3. Adaptability to color modification.
The A-500 is the only spot photometer designed to measure
light ratios rapidly and conveniently. Ratios over 1,000 to 1
can be read without throwing a range switch.
Luminance range is greater than 0.3 to 10,000 foot lam-
berts. High sensitivity models to below .001 foot lamberts
are available.
A small acceptance angle, proper color response, and an
excellent optical system allow the A-500 to measure light
accurately from small, inaccessible areas (inside surgical
incisions) or from objects at a great distance (cloud high-
lights).
Color response is matched by internal filters to:
1. The photopic response of the eye;
2. Panchromatic response of film; or
3. The S-10 and S-18 surfaces of TV camera tubes.
It is not a visual type photometer, eliminating human judg-
ment errors.
The A-500 is a practical instrument because it has no zero,
balance, or drift adjustments, is completely self-contained,
and has been designed throughout to withstand the rigors
of field use.
Power is consumed only while taking a reading. There is no
warm-up drift. Battery life is in excess of 60 hours. There is
a built-in battery check.
Flare is exceedingly low because of:
1. Double light baffles behind lens.
2. Built-in 22.5? sun shade.
3. Careful selection and individual testing of lens.
4. Completely separate view finder from photometer.
Its straight-through optical system, without partial reflect-
ing surfaces, gives the A-500 complete freedom from polar-
ization error, insuring accuracy in measuring reflected glare.
The electronic circuitry, including the photomultiplier tube
base, is encapsulated to insure stability under conditions of
extreme humidity and to protect it from shock and vibration.
Because of the A-500's logarithmic response, the accuracy
of reading the meter scale remains constant regardless of
meter deflection, an important characteristic in measuring
ratios.
View finder features:
1. Simultaneous viewing of scene and meter.
2. X 1 magnification and excellent eye relief.
3. No image inversion, reversal, or ghosts.
4. No "washing out" of meter scale or reticle.
DESCRIPTION The A-500's objective lens, similar to a
camera's, forms an image on an aperture plate correspond-
ing to the film plane in the camera. A very small hole in
the plate allows only the light from the center of the image
to pass through to the photomultiplier. Because there is so
little light available, the photomultiplier's unique ability to
amplify the photo current a million times makes it the ideal
photo sensor for this measurement.
FIG. 1
The illustration above shows what the operator sees in
the view finder. In the top portion he sees the object to be
measured. A collimated, illuminated ring reticle encloses
the area being measured. Immediately below the field of
view, the indicating meter is visible so that the operator
does not have to move his head between pointing the instru-
ment and reading the meter. This design also allows rapid
zeroing-in of the A-500 on the maximum or minimum
luminance in an area.
A calibrated, continuously variable sensitivity control on
the side of the instrument allows the A-500 to be pointed
at a remotely located surface and adjusted so that its meter
reads 100 (as shown in the illustration). Then, by aiming
the A-500 at other areas, the observer can relate the read-
ing of these areas in terms of per cent to the first or refer-
ence area. Thus, luminance or brightness or contrast ratios
can be directly determined.
In Figure 2, three views of a cube show the measure-
ment technique of the analyzer. In Figure 2A, the instru-
ment is aimed at the brightest portion of the scene (in this
case, the top of the cube). Then the variable sensitivity
control is adjusted until the meter reads 100. In Figure 2B,
the instrument is aimed at the side of the block and another
reading is taken without further adjustment of the sensi-
tivity control. This second reading then is made relative to
the first. In the illustration, this side of the cube reads 50.
FIG. 2
RELATIVE LUMINANCE
RELATIVE LUMINANCE RELATIVE UMINANCE
2 3 4 5 6 8 10 20 40 60 100 200 1 2 3 4 5 6
A
8 10 20 40 60 100 200 1 2 3 4 5 6 8 10 20 40 60 100 200
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
Declassified in
Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
FIG. 3
In Figure 2C, the instrument is aimed at the dark side of
the cube, again without adjusting the sensitivity control,
and again the measurement is made in relation to the
original reference, the top of the cube. This side of the cube
has 10% the luminance of the top of the cube.
There are two models of the A-500. These are identical
except for the calibration on the sensitivity control. One,
the A-500 fL, has a foot lambert computer, allowing any
indication of the meter and setting of the sensitivity control
to be read directly in foot lamberts. This computer is shown
in Figure 3. In the illustration, a meter deflection of 20 (on
the "Meter Ind." scale) corresponds to a 16 foot lambert
level as read off from the "Ft Lambert Scale."
The second version, the A-500 EC, features an exposure
computer shown in Figure 4. This allows the photographer
to measure the actual lighting balance, and in particular to
see that the flesh tones are properly positioned with regard
to the maximum and minimum luminance values in the
scene. While the lighting balance is being checked and
adjusted, the exposure computer is simultaneously deter-
mining the proper exposure on the constant density prin-
ciple. For instance, exposure can be computed on the basis
of the brightest portion of the scene to be photographed
merely by pointing the instrument at this part of the scene
and adjusting the sensitivity control so that the meter deflec-
tion corresponds to a point on the characteristic curve of
the film representing the maximum density desired in the
negative, or minimum density in reversal film.
This approach to exposure determination is particularly
important for both black and white and color reversal films
and, also, in any film, either black and white or color,
positive or negative, for television.
FIG. 4
APPLICATIONS
TELEVISION 84 FILM SCENE LIGHTING Once a
TV camera has been aligned by means of a prop-
erly illuminated gray scale and wave form monitor,
the A 500 may be used to check the absolute lumi-
nance of each of the strips of the gray scale. These
levels can then be transferred by means of the
A?500to a set to be televised by adjusting the light-
ing. This procedure insures that a properly lit scene
is fed the TV camera both in regard to absolute light
level and brightness range. Once the range has
been so determined the A500 may be used to light
scenes without a live camera.
It should be emphasized that through this ap-
proach the best gray scale rendition can be estab-
lished and maintained for any television system,
particularly important with 41/2" image orthicon
cameras.
The above remarks also hold for the making of
motion pictures for television. In this case, the
gray scale should be photographed first and used
? in the developing and printing of the film as the
basic contrast control means. Then when the film
is proiected into the television system, the gain
and pedestal controls of the TV chain can be
adjusted for best gray scale rendition and with the
assurance that the film to follow will match this
gray scale range and, as a result, be optimally
transmitted.
ILLUMINATION ENGINEERING AND HUMAN FAC-
TORS ANALYSIS Because the A-500, with its
adjustable sensitivity control, is designed to meas-
ure luminance ratios directly and accurately, and
because of its 1/2 degree acceptance angle, an im-
portant application of the instrument is in the area
of visual task evaluation and brightness and seeing
criteria.
Also, and in particular, the A-500's low flare and
complete freedom from any polarization charac-
teristics suits it to reflected glare measurement.
Additionally, its self-contained, compact form,
the fully encapsulated electronics, makes it a prac-
tical, rugged instrument in the field.
REFLECTANCE MEASUREMENTS The A-500 is
a particularly convenient instrument to use in
measuring reflectance of surfaces.
With an 18% card in the same illumination as
the unknown surface, the operator merely points
the A-500 at the card and adjusts the sensitivity
control so that the meter deflection is 18. Then, by
swinging the instrument over to the unknown sur-
face, he can read off its reflectance directly from
the meter scale in terms of per cent.
SCREEN BRIGHTNESS Screen brightness meas-
urements can be taken with the A-500 from various
audience locations in the theater, drive-in, or
screening room to study how the screen bright-
ness varies with seating location.
KINESCOPE RECORDING The A-500 can be used
to control kinescope light output and luminance
range in the making of film recordings. Not only
can it readily monitor a small reference area and
measure slight variations in light output, but the
recording engineer, when using it, can also check
the range and linearity of the kinescope's gray
scale when a stair step test pattern is displayed.
Through the use of standard portrait lenses, the
A-500 can analyze an area as small as 0.15" in
diameter at a distance of 17" from the tube face.
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
External filters and portrait lenses may be added
to the A-500 behind the sun shade. The filter holder
is designed to accept standard Series 5 size filters
and lenses.
As a result, when the photographer wishes to
use a filter on his camera, he can add one of the
same type to the A-500 and measure luminance
ratios on the same basis as the response of the
filter-film combination of the camera. Then the
exposure computer in the A-500 EC will compute
exposure directly, taking into account the filter's
attenuation. Filter factors are not used in computing
exposure in this case.
Series 5 portrait lenses may also be added for
closeup work. Adding a 2 diopter lens will focus
the A-500 on an area 0.15" in diameter at a distance
of 17 inches.
hi 1
The dividing resistors of the photomultiplier
assembly are soldered directly to the tube's pins
and the whole base assembly filled with silicone
rubber, protecting this critical part of the circuit
from dust and humidity. The electronic circuit is
similarly potted.
011 I. mil we as at wor Nur
400
500
600
?
PANCHROMATIC T
FILM
700 400
A-500 DOUBLE DOT
500 600
WAVELENGTH rn
?
The A-500's power is supplied by self-contained
batteries. The instrument uses two standard 9 volt
transistor batteries, one 11/2 volt C sized dry cell,
and one miniature 221/2 volt photo flash battery. All
are readily available, popular batteries that the
operator can change quickly and easily. The instru-
ment contains a battery checking feature that
allows the condition of the batteries to be quickly
ascertained. Battery life is greater than 60 hours.
Power is consumed only when the trigger is pulled.
There is no warm-up drift.
700 400
500
600
700
By means of the filter wheel on the upper left side With the wheel in the double dot position the response
of the instrument, the spectral response of the A-500 is broadened to match the spectral curve of color and
can be readily changed. In the graph above, with the panchromatic black and white film. This match is
filter wheel in the single dot position, the A-500 matches superior to any other photographic light measuring
the photopic response of the eye. device. For instance, the match is so close that using
different film speed ratings for daylight and tungsten
is improper. The daylight rating is always used.
In the "no" dot position, the response closely matches
the S-10 and S-18 surfaces of image orthicon and vidicon
TV camera tubes, as shown above.
4IPr
/BLACK /SHADOW!
DETAIL
FLESH BRIGHT
RANGE IREFERENCE\
b i 46-
30 20 15
10
I
I II 1 III
iv I v
I vi iv!! lviii I ns?
i
i 4
a 46-
3.2 64 128 256
Here are two special meter scales. One is specifically designed for the
limited luminance range of television. For a given bright or white reference
level it shows the normal proper flesh tone range, with markings for light
(LI, medium (M), and dark (D) complexions. Also clearly defined are the
shadow detail area and the black limit below which detail will not be
satisfactorily reproduced. This scale is particularly well-suited for TV
production use and for instructing personnel in proper lighting for TV.
This other scale is based on the Zone approach to photography. The
A-500 is ideal for application of this theory because its variable sensitivity
control allows any scene element to be placed in any zone and the exposure
computed directly on this basis.
TECHNICAL SPECIFICATIONS
LOOK ANGLE: One-half degree
LUMINANCE RANGE: In excess of 10,000 foot lamberts to
less than .3 foot lamberts in two ranges. Higher
sensitivity models, to below .001 foot lamberts,
are available.
METER RANGE: 200 : 1
ACCURACY: --k0.1 log
VARIABLE SENSITIVITY CONTROL RANGE: In excess of 100 to 1
OVERLAP BETWEEN RANGES: At least 10 to 1
WEIGHT: 3 pounds with batteries
DIMENSIONS: 71/2" long, 21/2" high, 6" wide
MOUNT: Standard 1/4-20 tripod socket
FILTER WHEEL: 4 positions: first position, photopic; second,
film; third, matching S-10 and S-18 response; fourth,
available for special filters on order.
EXPOSURE COMPUTER ON A-500 EC MODEL: f 0.7 to f 45
1/2000 to 4 sec.
.1 to 12,000 ASA
GAMMA SCIENTIFIC, INCORPORATED
REPRESENTED BY GORDON ENTERPRISES
Catalogue 344
5qA9 (*.Awl irninA RI vn Nruz?-rw 'in! I vwnnn ('Al ir Tri ? 7AA.'170c
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
AP
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7
i t#SeW
dft /
Declassified in Part - Sanitized Copy Approved for Release 2014/01/16: CIA-RDP78B05708A000400020001-7