Page 1
Film Data Sheet
T-879
8 x 10 Sheet Film
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Film Speed
ISO 100/DIN 21
Description
Medium-speed, medium-contrast, medium-grain, daylight and
electronic flash balanced (5500°K) color print film. This film
features accurate colors and bright whites; sharp, vibrant,
saturated proofs and final art; lower contrast for greater detail
when compared to Polaroid Pro 100 film; improved reciprocity
characteristics, and fast clearing and drying.
Key Applications
• Professional photography proofing (strobe or short
exposures only)
• Final art
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• Test shots
• Large-format copystand photography
• Evidence documentation
• Photographic souvenirs
• Large-format photomicrography
• Materials and quality control documentation
• Special events photography
Format
8 x 10 in. (20.3 x 25.4 cm)
Sheet Film
Image Area
1
7
/2 x 91/2 in. (19 x 24 cm)
Finish
Glossy
Exposures per Unit
15 exposures per box
Development Time
90 seconds at
70°–95°F (21°–35°C)
Caution
This film uses a small amount of
caustic paste. If any paste
appears, avoid contact with skin,
eyes and mouth and keep away
from children and animals. If you
get some paste on your skin,
wipe it off immediately, then
wash with water to avoid an
alkali burn. If eye contact occurs,
quickly wash the area with plenty
of water and see a doctor. Keep
discarded materials away from
children, animals, clothing and
furniture.
Limited Warranty
See information on the film box.
Compatible Hardware
• MP-4+ Camera (w/ 8 x 10 head)
• 8 x 10 processor/ holder/ tray
• DayLab
Special Instructions
Force-drying prints:
Allow the print to air-dry for at least thirty (30) seconds before
using a forced-hot-air dryer.
Viewing:
When evaluating the color balance of a print, use the same light
source under which the print is to be viewed as a finished product.
Laminating prints:
This film is NOT recommended for use with laminates requiring a
wet print to produce a photo-destruct bond.
Alternative Product
Use Polacolor 809 for emulsion lift
Processing Information
Temperature Proc. Equivalent Exposure
Time Film Speed Adjustment
°F °C
70-95 21-35 90 100/21 None
65-69 18-20 120 100/21 None
61-64 16-17 150 100/21 None
55-60 13-15 180 100/21 None
“Polaroid” and “Polacolor” are trademarks of Polaroid
Corporation,
(sec.) (ISO/DIN)
Waltham, MA 02451 USA.
Page 2
Film Data Sheet
Technical Data
T-579, T-679, & T-879
Instant Color Peel-Apart Films
The information in this data sheet
represents the typical performance
of Polaroid’s T-679, T-579 and
T-879 color films. Specific film lots
may vary.
3
Characteristic H&D curves for
normal development
Recommended speed:
ISO /DIN 100/21
o
Recommended processing
time and tempe rature:
o
90 seconds at 70
o
-35oC)
(21
-95oF
Balance:
Daylight and electronic
o
flash (5500
K)
Contrast:
Medium
H&D Curves
o
F/21oC
@ 70
Blue
Green
Red
2
Sample Density
1
0
-3
-2 -1
0
Relative Log Exposure
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.
At 71o F/21o C: D-Max = 1.8 D-Min = .16 Slope = 1.30
Characteristic H&D curves for
3
2
Sample Density
1
0
-3
cold development
H&D Curves
o
@ 55
F/18oC
Relative Log Exposure
Blue
Green
Red
Sample Density
0-2 -1
Characteristic H&D curves for
3
2
1
0
-3
hot development
H&D Curves
o
F/35oC
@ 95
-2 -1
Relative Log Exposure
Blue
Green
Red
0
Page 3
Film Data Sheet
Technical Data
T-579, T-679, & T-879
Instant Color Peel-Apart Films
Spectral Sensitivity
Spectral Sensitivity
0 5 10 15 20 25 30 35 40
350 400 450 500 550 600 650
Wavelength (nm)
Action Sensitivity
Blue
Green
Red
Blue
Green
Red
Reciprocity Law Failure
Relative Log Exposure
0 0.4 0.8 1.2 1.6 2
.0001" .001" .01" .1" 1 10" 1
Exposure Time (seconds)
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.
Blue
Green
Red
Log Relative Sensitivity
-1 -0.5 0 0.5 1 1.5
350 400 450 500 550 600 650
Wavelength
Spectral Sensitivity: Shows the equivalent energy needed
at each wavelength in order to activate the emulsion dyes so
that they produce a neutral density of 0.75.
Action Spectra: Shows the film’s relative sensitivity
throughout the visual spectrum.
Page 4
Film Data Sheet
Technical Data
T-579, T-679, & T-879
Instant Color Peel-Apart Films
Intermittency Effect (Multi-Pop)
Polaroid Proof Ektachrome (100Plus)
# of Flashes *Exposure
Change
1 none none none none
2 1 stop cc 5 red none none
4 2 stops cc 10 magenta
8 3 stops cc 15 magenta
16 4 stops cc 25 magenta
* Exposure change from the best Polaroid Proof
** The Polaroid Proof has an increasing green color balance from 4 to 16
flashes. Use the above magenta filtration to subtract green. The recommended
filters require the following exposure changes: cc 5m - none, cc 10m + 1/3,
and cc 20m + 2/3.
**Color Correction Exposure
Change
+1/3 none
+ 5 yellow
+ 1/2 cc 5
+ 5 yellow
1cc 5
+ 10 yellow
Color
Correction
magenta
magenta
Filter Recommendations
Color Temp (oK) Exposure Filtration
Effective ISO
(appr ox.)
2800oK 1/8 sec 80A + 5M 32
1 sec. 80A + 20M 25
4 sec. 80A + 30M 20
15 sec. 80A + 40M 16
3200oK 1/8 sec. 80A 32
1 sec. 80A + 10M 25
4 sec. 80A + 20M 20
15 sec. 80A + 30M 16
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