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i am using 400 tmax with ddx+6 @70 degrees. using the expo/dev program, one of my negatives has a subject brightness range of 7 (a gradient according to the program of 0.53). in the expo/dev program, this gives a development time of 7:00. when i check the plotter program using the same film/developer combination (supplied by phil davis), the development time is 6min 20secs. am i missing something? thanks.
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