Keithfolk
TPF Noob!
- Joined
- Jan 23, 2011
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- California, USA
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I have a question regarding the light sensitivity of black and white films used in the 1930's. I know orthographic film wasn't sensitive to red, but I wonder if another film might have been highly sensitive to yellow.
![[No title]](/data/xfmg/thumbnail/32/32433-abebb6cea0cf29d5f27d9054c7b0664e.jpg?1734161774)
![[No title]](/data/xfmg/thumbnail/39/39529-3b8de3decb03849c8e9c6abdae9650cf.jpg?1734173673)