NEW FILTER DESIGNATION AND DESCRIPTION

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78B04767A000300050005-7
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 12
• Document Creation Date: December 9, 2016
• Document Release Date: July 17, 2000
• Sequence Number: 5
• Publication Date: January 1, 1968
• Content Type: LIST

APErf/voliciEclrERCIPECnoworaNGIAT-EllainflIMITIMAI0961300050005-7
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At tachment 1
25X1A
!1%!.
FILTER
DESIGNA-
TION
DESCRIPTION
NOMINAL SPECTRAL
TRANSMISSION
(50% T p+ (s) )
NOMINAL
FILTER FACTOR
WITH 3404
NEAREST
WRATTEN
EQUIVALENT
AXIS
OF
POLARIZATION**
SF01
Long Wave
Pass
Orange
550
1.8
W/21
N/A
SF02
Long Wave
Pass
Orange-Red
580
2.3
W/23A
N/A
SF03
Long Wave
Pass
Red
600
2.5
W/25
N/A
SF04
Visual Band
Pass
Orange
570-680
3.1
None
N/A
SF05
Visual Band
Pass
Green
490-600
2,8
W/57
N/A
SF06
Long Wave
Pass
Yellow
530*
N/A***
W/15 + 1. OND
N/A
SF07
Polarizer
Neutral
3.0
0.45 ND
00
SF08
Polarizer
Neutral
3.0
0.45 ND
100
SF09
Polarizer
Neutral
3.0
0.45 ND
20?
* - Actually 5% transmission as the base transmission will be 10%.
** - Axis of polarization measured from the long dimension of the filter.
*** - This filter is for use with color films.
Approved For Release 2002/05/02 : CIA-RDP78B04757A000300050005-7
HANDLE VIA
cotsrraoL SYSTEM 0144.41
25X1A
25X1A_
?,"*?- Approved For4jease 2004(4/0 :',A1IFICDP78B04767A000300050045-7
y- ?W Artachment 2 Pig. 1
Percentage Frequency
Distribution of Recommended
Exposure Changes for
1000-Series Acquisitions
?Stops Underexposed -Stops Overexposed ?
-Log E 2.70 1.0 1.30 L80 1.90
1
Within 1/2 Mop of
I Desired Exposure
:W. 924P 11,
f r 4
Overexposed but within
System Capability to Compensate
Overexposed Beyond System
Capability to Compensate
Underexposed Beyond System
Capability to Compensate
4.
Approved For Release 20Q2/05j92.j CIAAEOPT8B04767A000300-051146147s-vm
IU CONTROL SYSTEM ONLY,
A/,20)A
More Than .
- .5 Stops
Under
38% in Cloud
Shadow
25% at a Solar -
Altitude of
20? or Below
Approved For Release 2002/05/02 : CIA-RDP78604767A000300050005-7
?
More Thc.,r-
.5 Stop3
Over
30.5% Snow or Snow
Surround
29.1% Cloud Cover O?
Partial Cloud
Cover
11.2% At Solar Altitudz:
- of 60? or Above
?
"7
?
Approved For-Release 2002/0o/u2 : C1A-RDP78B04767A0003
Approved For4lease 2002/(15/021/4a1NA
1='N112/68
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? CONTROL SYSTEM ONLY
-
5X1A
Approved For Release 2002/05/02 : CIA-RDP78604767A000300050005-7
BEST COPY
Available
6/17/98
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25X1D 25X1A
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25X7,612/68
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SECRET/SPECIAL HANDLING
CURRENT PLANS FOR SYSTEMS CAPABILITY EFFORT
11 JANUARY 1968
SECRET/SPECIAL HANDLING
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CONTROL SYST5IVI ONLYJ
25X1A
Approved For4elease 2002/05/02 : CIA-RDP78B0476,000300050005-7
SECRET/SPECIAL HANDLING
TEST DESCRIPTION
FLIGHT
CR-1 FILTER 21, 23A, 25
EXPOSURE 11/3 STOP RANGE; DENSITY
COMPARISON
CR-2 BIS PE C TRAL W/25 + SF-05
POLARIZER POLOCOAT, 200 ANGLE
S0-230 "FASTER" 3404 TYPE FILM
CR-3 BIS PE CTRAL W/25 + SF-OS, OPERATIONAL
WIDE BAND FILTER WRATTEN NO. 12
S0-380 UL TRA THIN. BASE FILM
CR-4 SO-180
NIGHT
COLOR INFRARED FILM
SO-340 (TRI-X TYPE EMULSION)
TENTATIVE
CR-S KODACHROME II HIGH RESOLUTION COLOR
FILM
CR- 6(CR- 7) POLARIZER
THROUGH FOCUS
U.)
PRINTER, PROPER AZIMUTH
STEPPED GLASS FILTER
SECRET/SPECIAL HANDLING
25X1A
Approved For Release 2002/05/02 : CIA-RDP78B04767A000300050005r7
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CONTROL SYS1 NY
Approved For Release 2002/05/02 : CIA-RDP781304767000300050005-7
SECRET/SPECIAL HANDLING
1. FILTER EVALUATION
o BASIC OBJECTIVE: SEE WHAT DIFFERENCES OCCUR IN
OPERATIONAL PHOTOGRAPHY WITH THE
WRATTEN NO. 12, 21, 23A, AND 25 FILTERS
A. SUBJECTIVE EVALUATION
B. MTF ANALYSIS OF IMAGE QUALITY
C. TRADEOFF BETWEEN EXPOSURE TIME AND ATMOSPHERICS
2. EXPOSURE ANALYSIS
o BASIC OBJECTIVE: DETERMINE:
1. IF SLIT CHANGED PROPERLY
2. IF WE EXPOSE PROPERLY
3. COMPARISON BETWEEN TARGETS
AND TERRAIN DENSITIES
A. SUBJECTIVE EVALUATION
B. DENSITY VERSUS FREQUENCY ANALYSIS
C. EXPOSURE ANALYSIS WITH HIGH PRIORITY TARGETS
D. COMPARISON OF TARGETS AND TERRAIN DENSITIES
3. BISPECTRAL PHOTOGRAPHY
o BASIC OBJECTIVE: TEST THE OPERATIONAL FEASIBILITY OF
OBTAINING BISPECTRAL PHOTOGRAPHY
FROM MISSION PHOTOGRAPHY
A. SUBJECTIVE ANALYSIS OF TARGETS WITH RESPECT TO
TONAL DIFFERENCES, (NPIC)
B. OBTAIN GOOD BISPECTRAL PRINTS
C. IMAGE QUALITY ANALYSIS OF SF-05 IMAGERY
D. TEST BEST METHOD OF OBTAINING BISPECTRAL IMAGES
SECRET/SPECIAL HANDLING
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25X1A
Approved For?aelease 2002/05/02 : CIA-RDP78130476491000300050005-7
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4. POLARIZER FILTER
O BASIC OBJECTIVE: DETERMINE THE EFFECTIVENESS OF A
POLARIZER AS A HAZE-CUTTING FILTER
A. IMAGE QUALITY ANALYSIS
B. ATMOSPHERIC EFFECTS AS A FUNCTION OF SOLAR
ALTITUDE AND AZIMUTH
C. DETERMINE EFFECTIVE FILTER FACTOR
D. SUBJECTIVE ANALYSIS OF TONAL RENDITION
5. SO-230
O BASIC OBJECTIVE: COMPARE SO-230 WITH 3404 IN AN
OPERATIONAL MISSION
A. FILM SENSITOMETRIC CHARACTERISTICS (FOG, GAMMA,
SPEED, FILTER FACTORS)
B. FILM IMAGE QUALITY ANALYSIS (MTF, RESOLUTION)
C. SUBJECTIVE EVALUATION OF FLIGHT FILM
D. SYSTEM RESOLUTION
E. TONE REPRODUCTION COMPARISON
6. SO-380
O BASIC OBJECTIVE: TEST SO-380 IN THE SYSTEM
A. FILM SENSITOMETRIC CHARACTERISTICS (FOG, GAMMA,
SPEED, FILTER FACTORS)
B. FILM IMAGE QUALITY ANALYSIS (MTF, RESOLUTION)
C. SUBJECTIVE EVALUATION OF FLIGHT FILM
D. SYSTEM RESOLUTION (MTF/AIM)
E. LAB CHAMBER TESTS
F. LIMITED DIMENSIONAL STABILITY ANALYSIS
SECRET/SPECIAL HANDLING
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4
25X1A
Approved Forlibtlease 2002/05/02 : CIA-RDP78130476741000300050005-7
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7. SO-180
0 BASIC OBJECTIVE: OBTAIN MISSION PHOTOGRAPHY WITH
CAMOUFLAGE COLOR FILM
A. SUBJECTIVE ANALYSIS OF INFORMATION CONTENT
B. TONE RE PRODUCTION ANALYSIS
C. RELATIVE IMAGE QUALITY (RESOLUTION,
MICROPHOTOGRAPHS)
8. NIGHT PHOTOGRAPHY
0 BASIC OBJECTIVE: DETERMINE IF ACTIVITY CAN BE
DETECTED AT NIGHT
A. SUBJECTIVE ANALYSIS
B. STATIC ANALYSIS
C. THEORETICAL ANALYSIS OF NIGHT DETECTION
CAPABILITY
?
SECRET/SPECIAL HANDLING
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NDLE VI?
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/ ?
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DATE
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Access to this document will be restricted to those persons
cleared for the specific projects;
. CORONA
WARNING
This document contains information affecting the national security/ of the United States within the meaning
of the espionage laws U. S. Code Title 18, Sections 793 and 794. The law prohibits its transmission or
the revelation of its contents in any manner to an unauthorized person, as well as its use in any manner
prejudicial to the safety or interest of the United States or for the benefit of any foreign government to the
detriment of the United States. It is to be seen only by personnel especially indoctrinated and authorized
to receive information in the desi nated control channels. Its security must be maintained in accordance
with regulations pertaining tel Control System.
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