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Thread: BTZS user question

  1. #1

    Join Date
    Apr 2015
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    BTZS user question

    Hi, This question is for the users of the ExpoDev software. I have recently tried Btzs with conventional film and developers and so far I am really enjoying the results. Now, I have done the testing and created the film file for Hp4+ in Pyrocat-HD. I want to export the file to the ExpoDev program on my iphone. Because Phil Davis wasn't a proponent of using Btzs with pyro there aren't any reciprocity exposure figures available in the "Common Files" box in the program that I can use when exporting the file. I am wondering if any of the program users out there who are using Btzs and pyro have the info I need to fill out the "Exposure Class" and the "G Class" boxes specifically for Fp4+in Pyrocat-HD prior to exporting?

    I checked out Phil's book on how to go about testing for reciprocity and I am afraid it is a tad beyond my present capabilities. Thanks for any help.

  2. #2

    Join Date
    Sep 1998
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    Oregon and Austria
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    2,346

    Re: BTZS user question

    Hedd-wyn,

    I'm not a BTZS user, but I do use pyro developers. The developer itself shouldn't have a significant influence on the reciprocity failure characteristics of any film. Those are a property of the emulsion. If you have reciprocity data for a particular film obtained with another developer, they should be applicable to any other developer. Note that the manufacturers' reciprocity data isn't developer-dependent...

    So, if you can, use the reciprocity data for your specific films from elsewhere; just plug them in to your current database. That should be just fine.

    Best,

    Doremus

  3. #3

    Join Date
    Oct 2003
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    St. Simons Island, Georgia
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    570

    Re: BTZS user question

    I do use BTZS with Pyrocat and what adore us says works for me.

  4. #4

    Join Date
    Apr 2015
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    Re: BTZS user question

    Quote Originally Posted by j.e.simmons View Post
    I do use BTZS with Pyrocat and what adore us says works for me.
    Thanks to both of you. Makes perfectly good sense.

  5. #5

    Join Date
    Oct 2003
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    Re: BTZS user question

    This iPad and auto correct. Of course I actually typed Doremus.

  6. #6

    Join Date
    Sep 1998
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    Re: BTZS user question

    Quote Originally Posted by j.e.simmons View Post
    I do use BTZS with Pyrocat and what adore us says works for me.
    Quote Originally Posted by j.e.simmons View Post
    This iPad and auto correct. Of course I actually typed Doremus.
    Best auto-correct of my name ever! I get "adoremus" a lot too and, since I'm a musician, "do-re-mi" but this one tickled my funny bone.

    Best,

    Doremus (et al.)

  7. #7

    Join Date
    Oct 2003
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    Re: BTZS user question

    Ha. What’s your axe? I’m a low brass player.

  8. #8

    Join Date
    Dec 2009
    Location
    Pacifica, CA
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    Re: BTZS user question

    I've got some brass players in my household but the only musical instrument I can play is the record player.

    The other day I watched a YouTube video of a friend of mine who's an excellent guitarist...

    And I wished for a moment that I could play something.

    Then I realized. Oh yeah. I'm pretty good with a camera.

  9. #9

    Join Date
    Sep 1998
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    Re: BTZS user question

    Quote Originally Posted by j.e.simmons View Post
    Ha. What’s your axe? I’m a low brass player.
    I'm my own axe I'm a singer; bass-baritone; classical, lieder, opera, operetta, jazz. I've taught mostly for the last 10 years after singing professionally for 20+

    I have an undergrad degree in piano, but I'm no great shakes on keyboards; just enough to accompany my students and learn my roles.

    I played brass instruments through undergrad school though. Trumpet first, then horn, then tuba and then back to horn for a number of years. I played in a regional orchestra for nine years plus bands and chamber ensembles. When the singing career took off, I gave up the horn.

    Ive been photographing seriously alongside all of this for 35 years...

    Best,

    Doremus

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