SUBJECTIVE COMPARISON OF WRATTEN 25, 21, AND SF-05 FILTERED RECORDS, MISSION 1102

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04767A000300050025-5
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 7
• Document Creation Date: December 9, 2016
• Document Release Date: July 17, 2000
• Sequence Number: 25
• Content Type: REPORT

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Attachment 1 to
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Subjective Comparison of Wratten 25, 21, and BF-05
Filtered Records, Mission U02
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Reference; -TW'X 3133, February 1968
Conclusions; The contrast range is significantly reduced when
the SF--05 is used in place of the Wratten 21 or the Wratten 25
filter.
Apparent itege sharpness is reduced by a noticeable degree
on the SF-05 photography compared to the Wratten 21 and Wratten
25 filtered photography.
The effect of image quality degradation caused by the use
of the SP-05 filter is minimized when the photography is viewed
in stereo with the higher quality, higher resolution photography
exposed through the Wratten 25 filter.
The resolution of the green filtered record is generally
comparable to that of a normal J-1 mission.
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Attachment 2 to
W2911i/69
Comparison of SO-230 and 34OI Film Type
from Mission 1102-2-
Reference. Fhotographic Evaluation Report, mission 10+6,
TCS-2+630/63, August 1968
Conclusions : The conclusions are based strictly on the operational
material from Mission 1102. Film type 50-230 produces imagery which
at higher magnification (5OX and above) appears slightly grainier.
This apparent graininess, however, does not adversely affect the
information content of the material at the magnifications normally
used by the photointerpretera.
The potential advantage of SO-230 is in its additional emulsion
speed (approximately 2/3 stop) which will allow shorter exposure
times, thereby reducing the effects of uncompensated image motion.
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At achment 3 to
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SO--1E30 Evaluation, Mission 1104
Reference: Photographic Evaluation Report, Mission 1101+,
TC5--24660/68, December 1968
Conclusions: It should be emphasized that, (1) the coverage
obtained was not over the intended areas, (2) portions of the
material are severely degraded by fog from corona static, and
(3) approximately 30 percent of the 00-180 film is obscured by
clouds.
Regardless of these factors, portions of the 0.180 imagery
obtained on this mission closely approximate the expectations of
this lens/film combination. Some of the existing imagery contains
significant added information from an intelligence standpoint
provided thealyst is alloyed sufficient time to interpret (study)
it, has a working knowledge of the film characteristics, and is
familiar with the infra reflectivity of the various objects photo-
graphed.
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