Storage 



Since access to air increases shrinkage— "Cronar" possibly 

 excepted— film should be stored in sealed cans before and after use and 

 processing. Heat also speeds shrinkage; therefore film should be stored 

 in a cool place. Both rolls of a stereo pair nnust be stored under identical 

 conditions, both before and after processing. 



REFERENCES 



1. Calhoun, J. M. , 1948: The physical properties and Dimensional behavior 



of motion picture films. Journal of the Society of Motion Picture 

 Engineers, October. 



2. Fordyce, Calhoun, and Moyer, 1955: Shrinkage behavior of motionr 



picture film. Journal of the Society of Motion Picture and Televis ion 

 Engineers , February. 



3. Eastman Kodak Company, 1956: Kodak Materials for Aerial Photography . 



4. E.I. Du Pont de Nemours and Co. : "Technical Data on Experimental 



"Cronar" Polyester Film Base Sensitized with Du Pont Photolith 

 Emulsion. " 



267 



