Black & White Reversal Film 

KODAK PLUS-X Reversal Film 7265

Technical Data

KODAK PLUS-X Reversal Film 7265 is a medium-speed, panchromatic black-and-white film suitable for general exterior photography. It has a high degree of sharpness, good contrast, and tonal gradation. It can also be used in interior photography with ample artificial illumination.

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Contents


Base

KODAK PLUS-X Reversal Film 7265 has a grey acetate safety base. The back side of the base contains an antistatic layer with a carnauba wax lubricant.


Darkroom Recommendations

Reversal Processing
All processing operations should be carried out in total darkness until development is 50 percent completed. If necessary, the film can be examined using a KODAK 3 Safelight Filter / dark green, with a 15-watt bulb, no closer to the film than 1.2 meters (4 feet).

Negative Processing
No safelight is recommended until after the stop bath. Unprocessed films must be handled in total darkness.


Exposure Indexes

For recommended reversal processing:

Tungsten (3200K) - 80

Daylight - 100

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.

For negative processing (gamma=1.0) in a typical motion picture negative developer, use the following exposure indexes:

Tungsten (3200K) - 20

Daylight - 25

When exposing in super 8 cameras through a KODAK WRATTEN Gelatin Filter No. 85, the effective speed is reduced to 64 for daylight. In automatic cameras, due to the cartridge speed and filter notching system, the film will be exposed as follows:

Daylight (no filter) - 100
Daylight (with filter) - 64
Tungsten (without filter) - 80

The film latitude will provide satisfactory results at these exposure levels.


Exposure Table For Tungsten Light

This table is based on EI-80 (tungsten) and reversal processing with a shutter speed of approximately1/50 second, 24 frames per second (fps), and 180-degree shutter opening:

Lens Aperture

f/1.4

f/2

f/2.8

f/4

f/5.6

f/8

Footcandles Required[1]

32

64

125

250

500

1000

[1] At 18 frames per second, use 3/4 of the footcandles (fc) shown. When the film is used as a negative material, the values specified should be doubled.

Lighting Contrast

The recommended ratio of key-light-plus-fill-light to fill light is 2:1 or 3:1. However, you may use 4:1 or greater when a particular look is desired.


Filter Factors

KODAK WRATTEN Filter No.

3

8

11

12

15

21

23A

25

29

96[1]

Daylight

1.5

2.0

4

2.0

2.5

3

5

10

40

8

[1] For use in bright sunlight to reduce the exposure without modifying color rendering or depth of field. This filter which has a neutral density of 0.90 provides a reduction in exposure equivalent of 3 full stops.

Curves

Characteristic Curve

Curve

MTF Curve

Curve
The "perceived" sharpness of any film depends on various components of the motion picture production system. The camera and projector lenses and film printers, among other factors, all play a role. But the specific sharpness of a film can be measured and charted in the Modulation Transfer Curve.

Spectral Sensitivity Curve

Curve

RMS Granularity Curve

Curve

Read with a microdensitometer using a 48-micrometer aperture.

The "perception" of the graininess of any film is highly dependent on scene content, complexity, color, and density. Other factors, such as film age, processing, exposure conditions, and telecine transfer may also have significant effects.


Printable Curves


Reciprocity Characteristics

(Recommended Reversal Process at 76°F (24.4°C))

You do not need to make any exposure adjustments for exposure times form 1/1,000 to 1 second. If your exposure is in the 1/10,000 second range, it is recommended that you increase your exposure by 1/2 stop.

Reversal Processing

KODAK B&W Reversal Process

This film should be processed with KODAK B&W Reversal Process Kit Chemicals or with solutions prepared according to the formulas presented in KODAK Publication No.H-24.15, Manual for Processing KODAK Motion Picture Films, Module 15.

Note: KODAK B&W Reversal First Developer and Replenisher (D-94A) and KODAK B&W Reversal Bleach and Replenisher (R-10) should be used with this film. 

The recommended starting points for processing times and temperatures are shown in the table below. Actual processing times may differ from the ones shown because of machine design variables, such as film transport speed, degree of solution agitation, amount of solution carry-over, etc.

Process Step

Time
24.4°C (76°F)

First Developer
KODAK B&W Reversal First Developer and Replenisher (D-94A)

60 sec

Wash

30 sec

KODAK B&W Reversal Bleach and Replenisher (R-10)

60 sec

Wash

30 sec

Clearing Bath

30 sec

Wash

30 sec

Re-exposure

800 footcandle seconds

Second Developer
KODAK B&W Reversal Developer and Replenisher (D-95)

30 sec

Wash

30 sec

Fixer

30 sec

Wash

2 min

Notice: Observe precautionary information on product labels and on the Material Safety Data Sheets.

Negative Processing

Although designed for reversal processing, this film is capable of yielding useful negative images or conventional quality and contrast if developed in a developer such as KODAK Developer D-96 and them fixed. When a developer of this type is used, the speed is not more than 1- 1/2 to 1- 2/3 that is normally obtained in reversal processing (using KODAK B&W Reversal First Developer and Replenisher (D-94A)).

If negatives are required, it is preferable to use films designed for that purpose.


Storage

Store unexposed film at 13°C (55°F) or lower. For extended storage, store at -18°C (0°F) or lower. Process exposed film promptly. Store processed film according to the recommendations in ANSI/PIMA IT9.11-1998: for medium-term storage (minimum of ten years), store at 10°C (50°F) or lower at a relative humidity of 20 to 30 percent; for extended-term storage (for preservation of material having permanent value), store at 2°C (35°F) or lower at a relative humidity of 20 to 30 percent. For active use, store at 25°C (77°F) or lower, at a relative humidity of 50 +/- 5 percent. This relates to optimized film handling rather than preservation; static, dust-attraction and curl-related problems are generally minimized at the higher relative humidity. After usage, the film should be returned to the appropriate medium- or long-term storage conditions as soon as possible.

For more information about medium- and long-term storage, see ANSI/PIMA IT9.11-1998, SMPTE RP131-2002, and KODAK Publications No. H-1, KODAK Motion Picture Film, and No. H-23, The Book of Film Care.


Identification

After processing, the product code numbers 7265, emulsion and roll number identification, emulsion letter designator EC, and KEYKODE number are visible along the length of the film.


Available Roll Lengths

For information on film roll lengths, check Kodak's Motion Picture Film product catalog or see a Kodak sales representative in your country.

Kodak, Eastman, Keykode, TRI-X, and Wratten are trademarks.
©Eastman Kodak Company 2003