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Description archivistique
Churchill, David Photography -- Equipment and supplies
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Wratten gelatin filter

Item is a set of 6 filters used in photographic printing to alter the contrast and range of values in prints. Developed by C.E. Kenth Mees for the Wrattan & Wainwrite in 1906, the company was purchased by Eastman Kodak company in 1912.

Eastman Kodak Company