The information in this data sheet
represents the typical performance
of Polaroid’s Spectra film family.
However, there may be some
variation between film lots.
Film Data Sheet
Technical Data
Spectra Film Family
D-Max:
The density value for the
film’s darkest black.
D-Min:
The lowest density value
that a film exhibits. In prints, the
whiteness of the brightest highlight,
relative to the unprocessed print.
Slope:
The positive ratio of the log
E increments of the straight line
region of the curve, as determined
by the 1/4-3/4 increment method.
The slope of an H&D curve
indicates the overall contrast of a
film: low contrast slopes less than
1.10; medium contrast slopes from
1.10 to 1.70; high contrast slopes
greater than 1.70.
0
-2
-1
0
1
2
Sample Density
Relative Log Exposure
3
Characteristic H&D curve for
normal development
H&D Curves
@ 70
o
F/21
o
C
Blue
Red
Green
-3
Recommended speed:
ISO/DIN 640/29
0
Recommended processing
time and temperature:
Approximately 3 minutes
at 70
0
F/21
0
C
Balance:
Daylight and electronic
flash (5500
o
K)
Contrast:
Medium
Resolution (1000:1):
7-10 line pairs/mm
0
-2
-1
0
Sample Density
Relative Log Exposure
H&D Curves
@ 55
o
F/18
o
C
-3
Blue
Red
Green
Characteristic H&D curve for
cold development
2
3
1
0
-2
-1
0
Sample Density
Relative Log Exposure
H&D Curves
@ 95
o
F/35
o
C
-3
Characteristic H&D curve for
hot development
2
3
1
Blue
Red
Green