EVALUATION OF FINAL REPORT ON PAR 213 UNDER(Sanitized)

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04770A002400040024-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 28, 2016
• Document Release Date: April 27, 2005
• Sequence Number: 24
• Publication Date: December 28, 1965
• Content Type: MFR

Approved For'kelease 2005/059" RERDP78BO477 002400040024-7
28 December 1965
SUBJECT: Evaluation Of Final Report On PAR 213
A. BACKGROUND
1. In view of the potential of color photography playing an important role
in the intelligence community, under PAR 2131 was given
the task of investigating and determining the most suitable means to reproduce
and utilize multiple copies of color materials. Included in this broad task
were specific tasks as follows: (a) Determination of the most suitable materials
for color reproduction systems, (b) Types of equipment to be used in all
phases of the reproduction cycle, (c) Define how color photography can best
be utilized by the photo interpreter.
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2. Work on this project began on 6 December 1963 and was completed, with
the final report dated 15 April 1965, at a cost to the Government
B. EVALUATION
1. The first impression gained from the final report is that
I has performed an adequate job in reporting on color reproduction systems.
However, when analyzing the basic task which, is to "INVESTIGATE AND DETERMINE
THE MOST SUITABLE REPRODUCTION SYSTEMS", it is obvious that this project has
not yielded the maximum information regarding exploitation of color materials.
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2. Based on the results of their study, has recommended: 25X1
(a) The use of SO-121 material where high contrast is desired in the reproduced
transparancy, (b) The use of SO-271 for a medium contrast transparancy
reproduction, and (c) Type SO-314 for a low contrast transparancy reproduction
material. Although the evaluations performed by substantiate 25X1
these recommendations, the evaluations were limited to products 25X1
only. It is possible that other manufacturers' color product d have
applied to many of these reproduction requirements. Although is likely 25X1
to favor their own products, there is no indication, in the fi rt,
that other products had even been given the slightest consideration.
3. A portion of this program involved a study of printing techniques including
additive and subtractive printing methods. The information and block diagrams
on this subject, were presented in an excellent manner, however, these techniques
are not new and can be found in any published text dealing with color printing
methods.
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4. Significant information on stereo viewing of color materials did result
from the study. Due to the resolution limits of present color aquisition materials
the practicality of viewing color transparancy material from high altitude
missions is extremely limited. Additionally, the original material, 50121,
due to high altitude haze conditions, is of very low contrast and lacks color
saturation. The contrast and color saturation can be greatly improved by
contact dupe printing on to the same material, SO-121. For stereo viewing of
high altitude materials, the best results can be obtained by using the dupe
positive in conjunction with a positive produced from a B&W 34+0 type aquisition
film, exposed simultaneously with the original S0-121 color material. When
viewing this B&W/color stereo pair, a medium color saturation is seen with
excellent sharpness. This effect is obtained by the inherently sharper black and
white positive plus the color signatures from the high contrast color dupe.
It is worth noting that to gain the maximum advantage of viewing a black and
white/color stereo pair, requires the insertion of a neutral density filter
over the black and white side. This technique subdues the black-and-white image
brightness (but not the sharpness) thereby increasing the apparent color
saturation of the stereo image. To avoid handling neutral density filters,
the use of a polarizing system in each optical path would simplify stereo
viewing systems.
5. The following materials have been recommended for particular
features in the reproduction systems:
(a) Transparancy Positives - Contact Dupes:
(1) Type S0-121 - A high contrast, relatively high resolution material -
excellent for reproduction of low contrast, low saturation, original high
altitude materials.
(2) S0-271 - A medium contrast product having lower resolution than
50-121.
(3) S0-344 - High resolution, low contrast product - excellent for color
copies of low altitude aquisition.
(b) Internegative Materials - Two internegative materials are recommended as
an intermediate stage in producing contact and enlarged hard copy color prints.
(l) Internegative film type 5270 is the best medium for contact printing
from the color original to produce hard copy enlargements. It has excellent
resolution and color fidelity characteristics.
(2) internegative film is recommended for enlarging directly
from the original. Due to its low resolution characteristics this medium
is not practical in contact printing from the original aquisition material.
Print Film is recommended to produce enlarged print
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transparancies from either of the two internegative materials. This
product has excellent color fidelity but is resolution limited.
(2) 1 ]professional print paper is recommended for enlarged reflection
color prints produced from either of the two internegative materials.
6. Equipment recommendations - Based on the study, has attempted 25X1
to specify the type of printing, processing and viewing equipment needed for
the exploitation of color materials. Most of their recommendations are broad
in nature with no specific design possibilities stressed. They recommend
investigation into the use of a modified Niagara or Colorado type printer for
contiuous contact printing. Also, that we should try and utilize the tri-
color (narrow band filter) technique in the development of any color printers.
This technique as stressed in this report has been proven to produce a superior
product over the white light (color compensating filter) technique. It is
worth noting that the approved breadboard of the briefing print enlarger, al-
though primarily a black and white printer, has color printing capabilities
utilizing the tri-color technique. Another worthwhile consideration, 25X1
is a variable area, intensity, and color balance transparancy viewer,
capable of handling long lengths of film, 70mm to 9.5 inches wide, and having
a viewing area at least 30 inches long.
Summary - Although has done a fine job in reporting on
film and print materia s for reproduction systems, the task of reviewing
color materials for exploitation systems is not complete until other manu-
facturer's comparable products have been evaluated. Also the reproduction
method of positive to positive (transparancy to reflection print) directly has
not been discussed in the review at all. Until these task have been completed,
it would be unwise to commit ourselves on any specific color equipment develop-
ment program. We should, however, keep in mind for future development products,
the following: (a) A stereoscope with individual polarizing eyepieces for
B&W/color stereo pairs, (gib) The modification of a Niagara type printer for
a continuous contact color printer, (c) Tri-color printing method or techniques-
to be employed in all type color printers, (d) A color transparancy viewer
with variable area, intensity, and color balance capabilities.
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eve opme t Branch, P&DS
Distribution:
Orig & Project File
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For Release 20059[LR IA DP78BO477OA002400040024-7