Methods and instruments for the determination of photographic speeds by measurement of relative characteristic gradients
By: [by] Clifton Tuttle ...
Contributors: Epstean Collection of Books on Photography and Its Applications in the Graphic Arts (Columbia University. Rare Book and Manuscript Library)
Publisher: [Lancaster Press, Inc.]
Published: 1939
Place of publication: Lancaster, Pa.]
Language: eng
Number of pages: 277
Subjects: Photography; Films
Notes: Cover title.

"Reprinted from Journal of the Optical society of America, vol. 29, no. 7, July, 1939."

"Communication 726 from Kodak research laboratories."