February 1999 • H-1-5231
TECHNICAL DATA / BLACK AND WHITE FILM
================H-1-7276
EASTMAN PLUS-X
Negative Film 5231™ / 7231™
DESCRIPTION
EXPOSURE INDEX/DIN
The speed and grain characteristics of EASTMAN PLUS-X
Negative Film 5231 (35 mm) and 7231 (16 mm) make it
well-suited for general motion picture production—both
outdoors and in the studio. These film characteristics provide
an excellent balance between the maximum desirable speed
for general production work and a fine-grain negative for
that speed. The speed of this panchromatic film permits the
use of small apertures, thus allowing good depth of field. The
film is also widely used for making composite projection
background scenes.
(For development to a gamma of 0.65 to 0.70.)
Daylight—80/20
Tungsten (3200 K)—64/19
Use these indexes with incident- or reflected-light exposure
meters and cameras marked for ISO or ASA speeds or
exposure indexes. These indexes apply for meter readings of
average subjects made from the camera position or for
readings made from a gray card of 18-percent reflectance
held close to and in front of the subject. For unusually light-
or dark-colored subjects, decrease or increase the exposure
indicated by the meter accordingly.
BASE
EXPOSURE TABLE FOR TUNGSTEN
LIGHT
EASTMAN PLUS-X Negative Film has a gray acetate
safety base.
At 24 frames per second (fps), 170˚ shutter opening:
DARKROOM RECOMMENDATIONS
Lens Aperture
f/1.4 f/2 f/2.8 f/4 f/5.6 f/8
f/11
Handle unprocessed film in total darkness. If necessary, you
can use a safelight for a few seconds only after developing is
50 percent complete. Use a safelight equipped with a 15-watt
bulb and a KODAK Safelight Filter No. 3 / dark green. Keep
the safelight at least 4 feet (1.2 metres) from the film.
Footcandles
required *
40 80 160 320 640 1250 2500
* At 18 fps, use 3⁄4 of the footcandles (fc) shown.
FILTER FACTORS
STORAGE
KODAK
WRATTEN
Filter No.
Store unexposed film at 13˚C (55˚F) or lower. Process
exposed film promptly. Store processed film at 21˚C (70˚F)
or lower at a relative humidity of 40 to 50 percent for normal
commercial storage. For more information on long-term
storage, see KODAK Publications No. H-1, KODAK Motion
Picture Film, and No. H-23, The Book of Film Care.
3
8
12 15 21 23a 25 29 96*
Filter Factor
for Daylight
1.5 2.0 2.5 3.0 3.5 5.0 8.0 25 8.0
* For use in bright sunlight to reduce the exposure without modifying color
rendering or depth of field. This neutral density filter No. 96 with a density of
0.9 reduces the exposure.
RECIPROCITY
You do not need to make any filter corrections or exposure
adjustments for exposure times from 1/10,000 to 1/10
second. At an exposure time of 1 second, increase exposure
by 1⁄2 stop.
©Eastman Kodak Company, 1998
Sensitometric Curves
Exposure: Daylight, 1/50 sec,
Spectral-Sensitivity Curves
Effective Exposure:1.4 seconds
3.0
2.0
1.0
0.0
1.0
3.0
2.0
1.0
0.0
intensity-scale sensitometer
Processing: KODAK Developer
D-96 at 21 C (70 F)
Process:KODAK Developer D-96
at 21 C (70 F) to the
recommended control gamma
Densitometry:Diffuse visual
Densitometry: Status M (Blue)
0.8
0.7
0.6
NET
FOG
=0.76
5 min
=0.63
=0.70
Gamma
D=0.3 Above gross fog
D=1.0 Above gross fog
0.02
0.00
6 min
4 min
Fog
5
4
6
DEVELOPMENT TIME
(minutes)
Base Density=0.19
250 300 350 400 450 500 550 600 650 700 750
WAVELENGTH (nm)
*Sensitivity = reciprocal of exposure (ergs/cm2 ) required
3.0
2.0
1.0
0.0
1.0
F002_0142AC
LOG EXPOSURE (lux-seconds)
F002_0143AC
to produce specified density
Notice: While the data presented are typical of production
coatings, they do not represent standards which must be met
by Kodak. Varying storage, exposure, and processing
conditions will affect results. The company reserves the right
to change and improve product character- istics at any time.
Modulation-Transfer Curve
200
100
70
50
These photographic modulation-transfer values were
determined by using a method similar to the one described in
ANSI Standard PH2.39-1977(R1990). The film was
exposed with the specified illuminant to spatially varying
sinusoidal test patterns having an aerial image modulation of
a nominal 60 percent at the image plane, with processing as
indicated. In most cases, these photographic
30
20
10
7
5
3
2
modulation-transfer values are influenced by
development-adjacency effects and are not equivalent to the
true optical modulation-transfer curve of the emulsion layer
in the particular photographic product.
1
1
2
3
4 5
10
20
50
100 200
600
SPATIAL FREQUENCY (cycles/mm)
F002_0141AC
EASTMAN PLUS-X Negative Film 5231™ / 7231™ • H-1-5231
3
EASTMAN PLUS-X Negative Film 5231™ / 7231™
AVAILABLE ROLL LENGTHS
For information on film roll lengths, check Kodak’s
Professional Motion Imaging Price Catalog or see a Kodak
sales representative in your country.
KODAK LOCATIONS
FOR DIRECT ORDERING IN THE UNITED STATES:
FOR DIRECT ORDERING IN CANADA:
1-800-621-FILM
1-800-621-FILM
ATLANTA, GEORGIA
MONTREAL, CANADA
4 Concourse Parkway
Suite 300
Atlanta, Georgia 30328-6105
Information: 800-800-8398
Kodak Canada Inc.
4 Place du Commerce, Suite 100
1le des Soeurs
Verdun, Quebec, Canada, H3E 1J4
Information: 514-761-7001
CHICAGO, ILLINOIS
TORONTO, CANADA
815 West Van Buren, Suite 320
Chicago, Illinois 60607
Kodak Canada Inc.
Information: 312-492-1423
3500 Eglinton Avenue West
Toronto, Ontario, Canada, M6M 1V3
Information: 416-761-4922
DALLAS, TEXAS
11337 Indian Trail
Dallas, Texas 75229
Information: 972-481-1170
312-492-1423
VANCOUVER, CANADA
Kodak Canada Inc.
4185 Still Creek Drive, Suite C150
Burnaby, British Columbia, Canada, V5C 6G9
Information: 604-570-3526
HOLLYWOOD, CALIFORNIA
6700 Santa Monica Boulevard
P. O. Box 38939
KODAK On Line At:
Hollywood, California 90038-1203
Information: 323-464-6131
NEW YORK, NEW YORK
360 West 31st Street
New York, New York 10001-2727
Information: 212-631-3450
LATIN AMERICAN REGION
8600 NW 17th Street, Suite 200
Miami, Florida 33126
Information: 305-507-5656
Professional
Motion Imaging
EASTMAN PLUS-X Negative Film
5231 / 7231
KODAK Publication No. H-1-5231
Kodak, Eastman, Plus-X, 5231, 7231, D-96,
and Wratten are trademarks.
Minor Revisions 2-99
Printed in U.S.A.
CAT 827 6073
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