oil spots, fig. 5
Fig. 5, Effect of an oil drop which was not disturbed after being placed on the film.
The spots are less pronounced if access of the oil is subsequent to the exposure.
ex G. E. Matthews and J. I. Crabtree,
Oil Spots on Motion Picture Film, paper No. 325 in Abridged Scientific Publications, Research Laboratories of the Eastman Kodak Company. Vol 12 (1928)
17 February 2012