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Thread: Temperature-Drift Musings...

  1. #21

    Join Date
    Mar 2005
    Location
    Newbury, Vermont
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    617

    Re: Temperature-Drift Musings...

    Thanks to all for a great discussion of some of the many variables which we all contend with! Something about this process being so very organic in nature which for me translates to: "Never a dull moment!" Its finally Spring here in Vt. - and I'm looking forward to getting out with my newly designed and constructed "Minimalist Nirvana" (thank you Willie!) 5x7! Click image for larger version. 

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  2. #22

    Join Date
    Jul 2016
    Posts
    2,245

    Re: Temperature-Drift Musings...

    Quote Originally Posted by neil poulsen View Post
    calibrations
    Interesting, it shows that with a 1 min development difference Z-VII moves 0.1D...

    Quote Originally Posted by Bob Salomon View Post
    But the guy in the developer tray, at the end of the shift, had to hope that the hypo tray had not been dumped or he went home with very strange looking hands!
    You were lucky if officers were not asking selenium toning

  3. #23

    Join Date
    Sep 1998
    Location
    GA
    Posts
    11,110

    Re: Temperature-Drift Musings...

    Quote Originally Posted by Pere Casals View Post
    Interesting, it shows that with a 1 min development difference Z-VII moves 0.1D...



    You were lucky if officers were not asking selenium toning
    Since we were an aerial reconnaissance unit speed was more important then presentation! Nothing fancy, whatever resin type paper DuPont was supplying in the very early 60s.

  4. #24

    Join Date
    Jul 2016
    Posts
    2,245

    Re: Temperature-Drift Musings...

    Quote Originally Posted by Bob Salomon View Post
    Since we were an aerial reconnaissance unit speed was more important then presentation! Nothing fancy, whatever resin type paper DuPont was supplying in the very early 60s.
    Regrading speed, I recall Corona satellite system... film comming from orbit was caught in mid-air by a passing airplane, film was processed in Rochester, but I guess it could be processed and analyzed in the plane itself, if needed...

    https://en.wikipedia.org/wiki/Corona_(satellite)

  5. #25

    Join Date
    Jun 2014
    Posts
    1,377

    Re: Temperature-Drift Musings...

    I think the areal grab method was mostly intended to prevent the soviets from getting their hands on the film canisters and thus work out what kind of imagery the US were capable of and what their surveillance targets were. Not that the thoroughly infiltrated informants couldn't muster up the same info, but still - don't make it too easy on them but yeah, it probably was fast - if all went according to plan. Iirc, a lot of the processing was accidentally put in the hands of deep sea creatures...

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