Support, Reciprocity, Dimensional stability – Kodak IMAGELITE GAI User Manual
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Technical Information Data Sheet – TI2407
August 2006
1. Support
Dimensionally Stable Support
ESY
4 mil (0.004 in., 0.10mm)
Estar base
2. Reciprocity
With recommended processing, the reciprocity speed change is negligible (1/3-photographic stop or
less) within exposure range of 1/1000 second to 1 billionth second; there is no change in contrast.
3. Dimensional Stability
Dimensional stability is an all-inclusive term. In photography, it applies to size changes caused by
changes in humidity and in temperature, and by processing and aging. The dimensional properties of the
Estar base may vary slightly in different directions within a sheet; the differences that may exist, however,
are not always aligned with the length and width directions:
Differences in size change between length and width should be within 10 percent of each other.
Thermal Coefficient of Linear Expansion
Unprocessed or Processed
0.001% per ° F (0.0018% per ° C)