Technical Data

KODAK Panchromatic Separation Film 2238

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Contents

• Base
• Darkroom Recommendation
• Storage
• Exposure and Filter Recommendations
• Printing the Duplicate Negative
• Processing
• Identification
• Image Structure
• Printable Curves
• Available Roll Lengths

Base

KODAK Panchromatic Separation Film 2238 has a clear ESTAR Base.

Darkroom Recommendations

Carefully make safelight tests before proceeding with production work. Use a KODAK 3 Safelight Filter/dark green or a KODAK 10 Safelight Filter/dark amber using a 15-watt bulb no closer than 1.2 m (4 ft) from the film. Avoid undue exposure of the film under the No. 10 Filter.

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 or SMPTE RP131-1998: for medium-term storage (minimum of ten years), store at 25°C (77°F) or lower, at a relative humidity of 20 to 50 percent; for extended-term storage (for preservation of material having permanent value), store at 21°C (70°F) or lower at a relative humidity of 20 to 50 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. All three separations should be kept under the same conditions. After usage, the film should be returned to the appropriate medium- or long-term storage condition as soon as possible.

For more information about medium- and long-term storage, see ANSI/PIMA IT9-1998, SMPTE RP131- 1998, and KODAK Publications No. H-1, EASTMAN Professional Motion Picture Films, and No. H-23, The Book of Film Care, September 1992.

Exposure and Filter Recommendations

Described below is a step-by-step method that can be used in determining the starting conditions for using this film. The recommendations include LAD and HD-LD guidelines that will assist in consistency of placement. These will be updated as testing continues.

Additive Printing
This procedure assumes a standard additive lamphouse, standard diachronic filters and mirrors, and a KODAK WRATTEN Gelatin Filter No. 2B in the blue exposing light beam for making the blue separation, and a KODAK WRATTEN Gelatin Filter No. 70 in the red exposing light beam for making the red separation. For making the duplicate negative, a standard additive lamphouse is again assumed, except for a WRATTEN Filter No. 2E in the blue exposing light beam instead of the WRATTEN Filter No. 2B.

Subtractive Printing
These are the recommended KODAK WRATTEN Gelatin Filters:
Red Separation Separations0
Green Separation   Green No. 99
Blue Separation Separatione No. 98
The film's curve shape can be influenced by the filters used for exposure.

For exposing the duplicate negative, use a WRATTEN 70 Filter for the red light exposure, a WRATTEN 99 Filter for the green light exposure, and for the blue light exposure, a WRATTEN 47B Filter plus a WRATTEN 2E Filter. The WRATTEN 98 Filter is the equivalent of a WRATTEN 47B plus a WRATTEN 2B Filter, but the 2E is the UV filter recommended for use with color intermediate film, which leads to the change for the duplicate negative exposure step.

Printing Exposure Adjustment
This film has a different speed balance than EASTMAN Panchromatic Separation Film SO-202, and the following compensation should be made versus your SO-202 Film setup.

Red

• +40 lights or 1.00 less ND when printing with an additive light source. SO-202 did not recommend the use of a WRATTEN 70 Filter, which creates this difference.
• No change is needed for subtractive printers versus the SO-202 setup.

Green

• +4 lights or 0.10 less ND

Blue

• none

Printing and Processing the Separations
To establish developer time needed for optimum R, G, and B contrasts:
Expose a loop containing EASTMAN Laboratory Aim Density (LAD) Film (or a frame of LAD for optical printers) onto this film using the R (plus a WRATTEN 70 Filter), G, and B individual channels. Expose enough footage of each to run a developer time series. Use at least 30-second increments centered around your times for SO-202 Film. Using Status M densitometry, read the LAD, low density (LD), and high density (HD) patches. These are the three large patches at the side of the LAD girl image. The LD patch is at the top (next to the top of the LAD girl's head), the HD patch is in the middle, and the LAD patch is the bottom most of the three. Record the Status M red densities from the red light exposure, the green densities from the green light exposure, and the blue densities from the blue light exposure.

Read the LAD patch on the respective R, G, and B, separations to get density measurements.
  Aims for this measurement are:
    Red      1.10
    Green   1.40
    Blue      1.50
The LAD aims assume timed separations.
Use the development time for the R, G, and B separations that gives an HD-LD delta density closest (within +/–.03) to the respective HD-LD delta densities obtained from the original color negative LAD patches, and adjust printer exposure to produce the LAD aim density at that time. Sensitometer exposures made with WRATTEN 70, WRATTEN 99, and WRATTEN 98 Filters, and processed with the corresponding separation should have the following Status M gammas:

Status M gamma:

NOTE: In a process using standard KODAK D-96 Developer at 21°C (70°F), the above densities and gammas were obtained at:

Publication No. H-61, LAD-Laboratory Aim Density

Printing the Duplicate Negative

Use the R,G, and B separations generated in the previous step that are closest to the LAD and HD-LD aims. You should need no compensation in setup versus your SO-202 setup.

Adjust your printing exposure until your LAD results are within the established LAD tolerance for a duplicate negative (DN) made on EASTMAN EXR Color Intermediate Films 5244/7244/2244.

DN LAD for 5244 is:

These conditions represent a starting point, and can be adjusted based on your system, preference, and the appearance of your work.

Processing

This film can be processed to a wide range of contrasts in either KODAK Developer D-96 or D-97. The film is designed to fit into the processing population of films processed in either D-96 or D-97 developer. Sensitometry produced in D-96 Developer is more suitable for separations, while higher densities for mattes can be obtained using D-97 Developer. For details on the processes, see KODAK Publication H-24.15, Manual for Processing EASTMAN Motion Picture Films, Module 15. For reference, also see the developer time series D-log H curves provided in this document.

If the processed film is to be used for long-term storage, adequate washing must be provided to reduce the retained thiosulfate level. Testing for retained thiosulfate should be performed in accordance with and adhering to the limits specified in ANSI/PIMA IT9.1-1996. Normally processed Panchromatic Separation Film is blue/gray in low-density areas, giving the film an overall blue/gray appearance.

Identification

This film has "EASTMAN SAFETY FILM" and the strip numbers latent image printed on the edge of the film.

Image Structure

The modulation-transfer curves, and the diffuse rms granularity data were generated from samples of this film exposed with red, green, and blue light and processed in KODAK Developer D-96 at 70°F (21°C). For more information on image-structure characteristics, see KODAK Publication No. H-1, EASTMAN Professional Motion Picture Films.

   Modulation - Transfer Curve

   Diffuse RMS Granularity Curve

   Spectral Sensitivity Curve

   Red Curve with Gamma Gross Fog Inserted

   Green Curve with Gamma Gross Fog Inserted

   Blue Curve with Gamma Gross Fog Inserted

   Red Curve: D-97

   Green Curve: D-97

   Blue Curve: D-97

   GAMMA: D-96

   GAMMA: D-97

   NET FOG: D-96

   NET FOG: D-97

Printable Curves

Available Roll Lengths

Kodak Panchromatic Separation Film 2238

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.

©Eastman Kodak Company 1999