(SANITIZED)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78T05694A000100010027-8
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 6
• Document Creation Date: December 28, 2016
• Document Release Date: August 30, 2011
• Sequence Number: 27
• Publication Date: February 25, 1955
• Content Type: IM

Sanitized Copy Approved for Release 2011/08/31: CIA-RDP78TO5694A000100010027-8
SECRET
PHOTO INTELLIGENCE YMORANEUM
GP/I-64
(Project 70.142)
25 February 1955
CENTRAL IN'T'ELLIGENCE AGENCY
ts
Office of Research and P
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This memorandum was prepared to answer a request from
TSS/DD/P for recommendations and assistance in making decisions
regarding optimum camera configurations. to satisfy unique
photographic conditions.
In addition to the attached memorandum, numerous consul-
tations with the requester, preparation of displays of photo-
graphic equipment, recommendations of specific camera types,
and discussion and suggestions regarding procurement of various
cameras have also contributed to the fulfillment of this
project.
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system of r. nndal recording could be ; ployed to eliminate the
1. Photo ra aia xecor 1tn of an instrument panel is believed to
'ore could be dispensed with if another means
The items which should
craft) w
include the altimeter and ther;;-aoaeter
weight and corrtplWdty of robot photographic recording. The to iperature
equal to or better than the type of
.cations or narily rec ived in photogr?.phy for P.I. prrrrposes,
za .edg
perature,
. These world be used in determining
ra eve scale of photography. ven these
is of measurable dimensions (such as air
15 minute intervals and the ,pressure at about
r,ticipated range of t mp r xtures of the
,o be tray 1cd are necessary otherwise only to dote ains if the
ald be heated and insulated, and to determine appr=iriatoly the
available for camera rumipulation.
In the F.I. FRe
floor
/1..3o of 0 Zerrt ber 1954,
If the c=era is mounted vertically in the
the standard 6 3/8' Ions, and consider:
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ninim i altitude of 10,000, th x angular coverage being about 430 across
the 5" axis of the format, only about 1 miles of the desired ntle
width of eoverago will be obtainable.
. sumtng the main altitude of 20,009, under the aama con-
ditions as a ove, the caarera will cover a strip only about 3 miles wide.
The coverage width of the K-20 would come
cad as the focal length of the camera is increas
p-ondingly
A ;partial solution, to the problem would be two X..20
anted in a specially constructed bracket to give "split-vertical"
s, and therefore increase to about 6 miles the width of coverage,
still howezrer,
m altitude. At 10,000' the coverage, even
with the "split vertical" mount employing 2 as ?eras would be only about
3 miles.
The tilts impose+j upon the K-20' e in a split-vertical mount
would b about 170, allowing a 10,E overlap, but this should not unduly
harmer the photo interpretation. Balloon oscillations will also con-
tribute aditittonal camera tilts.
Insteai of obtaiining a now set of equi_; ent specifications in
order to fill, the -1 mile area width coverag', it is suggested by
a critical re-appraisal of the 8-mile covorage re zir mint
be made. It is believeyl that this must be an arbitrary
no knc an airfields have into gral P.O.L. sites up to 4 miles away.
this recuirerzent will mean a proportional easing of the
problem of
ag the camera rani firemen
Also, a figure shouM be
Ned regarding pos ibie deviation from, the intended .fli 'it x atli
the target.
102.
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S. A viewfinder arrangemen
h 600 lines in the floor of the
gondola would serve as an asset to the photographer in making his
exposures and assuring stereo-coverage. Since the speed of the balloon
is probbl?y variable and no power supply will be available, the use of
an intervaloreter is ruled out.
6. In ad=iition to the above mentioned requirement considerations,
,-t of utilizing a fixed_c :aera mount be
exanlned.. Since t1target is an airfield and. adjacent P.O.L. sites,
its may-4m, m area i.ri l?.l probably be in the neighborhood of about 4 miles
square. At vehicle speeds estimated to be from 25 to 50 MPH, the time
to traverse the area will be between 5 and 10 minutes. With
a single K.2a camera, a minimum of 55 photos will be required to gt
Mete stereo-?ec verage of a 4 mile square area. This means making,
an ex po i ura approximately every 5 seconds at the minir'v altitude and
aura seed.
7. Recent inve
Ition by D/G' has loc^ted a relatively new
.de.?angla era which could possibly be used for aerial
edi.3h Hasselblad Superuide. Its advantages
are wide-an in- oovera e (900) which reduces considerably the number of
;photo
aparen
a given area, its light weight, fast lens, and
ation. Disadvantages tnelud a l2..s pasure roil
of film, and the resultant small scale. of photography. Pre tably, the
by the I2-exposure roll could be overcome by having
on hand enough loaded bac
adequate number of exposures to cover
..3-
. Mt3II''T-
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Resolution, which :shoes
enhanced considerably ter the lack
oration, will have to be of such
.argerent
otography from about 4, to 8 times and retain interpret -ability.
The size of the fom. at? 21 x ", lends itself to hero versatile use than
To
minlm,n of ay
photographs taken with this camera will be
required to give emkolete stereo-coverage. This will alIM
about 15
red hand.-held cameras of the 3a variety.
a t R 4 mile area, at minimum altitude of 10,,000' , a
In the event that the Bselblad Super tde camera should prove
to provide a resolution which will permit enlargements to suitable
interpret tien scales (about l 20,000), it is recceended that in
addition to this camera, another of the same make, but equipped with
phy of any "targets of apporthnttt,
which might oresentt the ^