Exposure

Relative Exposure Index

Exposure Orientation

System

Pulsed-Xenon

Tungsten or Quartz-Halogen

 

 

 

 

To emulsion

ISO (ASA/DIN)

20/14

20/14

 

 

 

 

These indexes are provided primarily as indicators of the relative speed of this film when compared with other Kodak graphic arts photographic materials. The pulsed-xenon value indicates the film's relative speed to pulsed-xenon illumination as measured by a light integrator. Index numbers for the other light sources can be used with photoelectric exposure meters to help establish trial exposures. A 2-times film-speed increase is indicated in the ASA system by doubling the index number and in the DIN system by increasing the number by 3.

Examples of Camera Exposures

Line Exposure: For a same-size (1:1) line reproduction exposing with four 1500-watt pulsed-xenon lamps at 3 feet (0.9 metre) from the center of the copyboard, use a trial exposure of 8 seconds at f/22.

Halftone Exposure: Make a trial exposure using a contact screen suitable for use with Kodak Camera 2000 films.

Example of Contact Exposure

Exposing with a variable voltage point-source lamp operated at 16 volts at a distance of 5 feet (1.5 metres) from the exposure plane—approximately 4 footcandles (43 lumens/square metre), use a trial exposure of 6 to 11 seconds (with a 1.0 neutral density filter), to the emulsion.

Filter Factors

When a filter is used, multiply the amount of unfiltered exposure by the filter factor shown below. Because lighting conditions vary, these factors may require adjustments.

Light Source

 

Kodak Wratten Gelatin Filter

 

 

No. 8

No. 15

No. 47B

No. 58

 

 

 

 

 

Pulsed-Xenon

1.5

2.0

12.0

4.0

 

 

 

 

 

Quartz-Halogen

1.5

2.0

20.0

2.5

 

 

 

 

 

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Kodak CGPM, CGP7 instruction sheet Relative Exposure Index

CGP, CGPM, CGP7 specifications

Kodak has long been a prominent name in the world of imaging, requiring no introduction among photography and printing enthusiasts. Among its various innovations, the Kodak CGP, CGP7, and CGPM series stand out as significant advancements that showcase the company’s commitment to quality and innovation in the realm of graphic arts and digital printing.

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