Black & White Reversal Film 

KODAK TRI-X Reversal Film 7266

Technical Data

We're committed to black-and-white film - improvements to our family of reversal films prove it. New KODAK TRI-X Reversal Film 7266 offers finer grain and increased sharpness, and includes EASTMAN KEYKODE Numbers for easy cross-reference of shots in minutes, not hours. Reduced static support allows for a cleaner image throughout the filmmaking process. And because our new films don't require processing in a bleach containing heavy metals, they're easier on the environment. Our improved films provide the rich blacks and excellent contrast you've come to expect from KODAK Black-and-White Reversal Films.

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KODAK TRI-X Reversal Film 7266 has a gray acetate safety base with an additional antihalation undercoat. 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 the bleaching step has been completed.

Negative Processing
This film can be processed as a negative by conventional methods and will yield satisfactory results. Some loss in speed and an increase in granularity will likely occur. Ask your processing lab technician for more information and recommendations.

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

Exposure Indexes

(For development to a gamma of 0.65)
Tungsten (3200K) - 160
Daylight - 200

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.

Exposure Table For Tungsten Light

At 24 frames per second (fps), 170° shutter opening:

Lens Aperture f/1.4 f/2 f/2.8 f/4 f/5.6 f/8
Foot-candles required* 16 32 64 125 250 500

*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.

Filter Factors

KODAK WRATTEN Filter No. 3 8 8N5 12 15 21 23A 25 29 96~
Filter Factor for Daylight 1.5 2 4 2 2.5 3 5 10 40 8

~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.

Reversal Processing

KODAK B&W Reversal Process Chemicals

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, Processing KODAK Motion Picture Films, Module 15, Processing Black-and-White Films.


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
60 sec
  Wash 30 sec
  KODAK B&W Reversal Bleach (R-10) 60 sec
  Wash 30 sec
  Clearing Bath 30 sec
  Wash 30 sec
  Re-exposure 800 footcandle
  Second Developer
  KODAK B&W Reversal Developer (D-95)
30 sec
  Wash 30 sec
  Fixer 30 sec
  Wash 60 sec

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


The modulation-transfer curves and the diffuse rms granularity were generated from samples of 7266 Film exposed with tungsten light and processed in the recommended reversal process at 24.4°C (76°F). For more information on image-structure characteristics, see KODAK Publication No. H-1, KODAK Professional Motion Picture Film.

Characteristic Curve




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

Spectral Sensitivity Curve


RMS Granularity 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 affect the look of the film.

Printable Curves

Note: These photographic modulation-transfer values were determined by using a method similar to the one described in ANSI Standard PH2.39-1977(R1992). 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, the photographic modulation-transfer values are influenced by development-adjacency effects and are not equivalent to the true optical modulation-transfer curve of emulsion layer in the particular photographic product.

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 characteristics at any time.


No exposure adjustment is required for exposure times from 1/1,000 to 1 second.


Store unexposed film at 13°C (55°F) or lower. Process exposed film promptly. Store processed film at 10°C (50°F) or lower at a relative humidity of 20 to 30 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.


After processing, the product code number 7266, emulsion and roll number identification, emulsion letter designator ED, and EASTMAN KEYKODE Number are visible along the length of the film.

Available Roll Lengths

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

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