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  1. #11
    Ektagraphic's Avatar
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    Are there any markings on the edges of the film that you can now see because it is processed?
    Helping to save analog photography one exposure at a time

  2. #12

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    Those tic marks are probably frame markers for motion picture film. My guess is that is is DuPont 931. I don't have any data for it. An approach would be to load a short roll and bracket some exposures around EI 250 (say 125, 160, 200, 250, 320, 400). Develop it like you would Tri-X, and see what you get. That will give you a baseline or further experiments to adjust the speed and development time.

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