4. ACKNOWLEDGEMENTS
The authors wish to thank the Department of Energy, Mines and
Resources for its assistance in various ways. The Technical Subcom-
mittee of the Interdepartmental Committee on Air Surveys and especially
its chairman, Mrs. E.A. Fleming, endorsed and encouraged the investiga-
tion and arranged for provision of some films and for processing at the
Reproduction Center. J. Hyams and A.R. Lavigne there ensured special
attention to the processing, and provided the practical examples des-
cribed of problems related to ambient condition. J. Fleming provided a
further example and a method of assessing colour balance. K. McKee
carried out the preliminary tests at N.R.C.
5. REFERENCES
1. Hyams, J. and Lavigne, A.R., Private communications. Reproduction
Centre, National Air Photo Library, Department of Energy, Mines
and Resources, Canada.
2. Specification for Aerial Survey Photography, 1975. Interdepart-
mental Committee on Air Surveys, Department of Energy, Mines and
Resources, Canada.
3. Fleming, J., Anomalous Colour Variations, Aerochrome Infrared Film.
Internal Technical Report, Energy Mines and Resources Canada,
Interdepartmental Committee on Air Surveys, April 1977.
4. Eggert, J. and Luft, F., Effect of temperature upon photographic
processes. Veroeffentlichungen der Wissenschaftlichen Photo-
laboratorien AGFA 2, 9 (1931).
5. Henson, P.W., The Influence of Heat on the Sensitivity of a Photo-
graphic Film to Low Intensity Light. J. Photographic Science 12,
102 (1964).
6. Kathren, R.L. and Samardzich, B.G., Low Humidity Induced Fog in
Photographic Films. Lawrence Radiation Laboratory, University of
California, Livermore, Progress Report No. 25, UCRL-50007-66-1,
April-August 1966.
7. Tull, A.G., Humidity and Photographic Sensitivity. Proc. Symp. on
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8. Carman, P.D., A Light Source for Sensitometry of Aerial Films.
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