Low Gamma Photographic Developer.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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This invention relates to A photographic developer composition containing Phenidone and hydroquinone in a 1 to 2 weight ratio, the composition having a gamma less than 1 and a pH in the range of about 9.8 to 10.4. The composition is particularly useful as an extended range developer for rapid processing of aerial film. Author
- Cartography and Aerial Photography