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  1. #11
    hortense's Avatar
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    Bruce - According to supplementary information supplied by Fred in one of his Newsletters, the Print timer setting is for print developers and the Negative timer setting is for negative developers (the so called standard ones at the time). Respectively I've use Dektol (and for several years now D-73) and for negatives HC110, D-76, and Phenisol). The Chairman of the Harvard Physics Dept.(who later designed the circuitry) and Fred did a survey finding that all the print developers used in that day had the same curve - and the same was true for negative developers.

  2. #12

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    Thats what I understand. I am told that the curve match for t-grain films is not a good one. Calumet quit making these because one of the components became scarce and the unit would have required a redesign.

  3. #13
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    I stand corrected. The sparse paperwork supplied with mine only says that the display dims in the "film" mode.

    Bruce N.

  4. #14
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    blaughn - That right; I forgot! When at one of John Sexton's workshops, he mentioned that T-grained film curve did not match the one programed into the timer.

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