Polaroid T-64 Film Camera User Manual


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Reciprocity law failure
A wide range of shutter speeds can be used without loss of film speed.
For longer exposure times, some exposure compensation is suggested.
Film Data Sheet
Technical Data
T-64 Tungsten
Instant Color Peel-Apart Films
Reciprocity:
The ability of the film to respond in a constant
manner to a constant exposure (light intensity x time).
Reciprocity failure occurs during very long or very short
exposures, requiring the photographer to increase exposure.
Spectral Sensitivity:
Shows the equivalent energy needed
at each wavelength in order to activate the emulsion so that it
produces a neutral density of .75.
Shutter
Speed
1/4000 to
1/30
1/15 to 4 8 16 32 64
Exposure
Adjustment
Not
recommended
+2/3 stop None +1/3 stop +1/3 stop +1/3 stop
Color
Compensating
Filter
- None None None CC05B CC05B
Exposure Time (seconds)
Relative Log Exposure
.001" .01".0001" .1" 10"1" 100"
Reciprocit
y
Law Failure
0
.2
.4
.6
.8
1.0
1.2
1.4
1.6
1.8
Blue
Red
Green
Spectral Sensitivity
Wavelength (nm)
0
1
10
1000
Spectral Sensitivity
350
100
650600550500450400 700
Blue
Red
Green
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