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Thread: RH StopClock Vario: light "integration"/compensation

  1. #1

    Join Date
    Sep 2014
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    Montreal, Canada
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    RH StopClock Vario: light "integration"/compensation

    Perhaps a dumb question, but I'm wondering if the compensation feature of this unit works even at much shorter exposure times than would be used in printing. Say 1/10 second for example. The reason I ask is I thought it might be of use in a sensitometer build.

    Thanks

  2. #2

    Join Date
    Dec 2009
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    Pacifica, CA
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    Re: RH StopClock Vario: light "integration"/compensation

    I don't know, but my Zone VI compensating unit clearly flickers. You could wait for stabilization then shutter the light.

  3. #3

    Join Date
    Sep 2014
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    Montreal, Canada
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    497

    Re: RH StopClock Vario: light "integration"/compensation

    Well, flicker is definitely a non-starter as far as sensitometry goes. I didn't think it worked that way. I thought the analyzer just monitored light intensity throughout the exposure and continuously adjusted the clock speed (ie a kind of feedback mechanism).

  4. #4
    Vanannan
    Join Date
    Nov 2004
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    Isle Of Man
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    Re: RH StopClock Vario: light "integration"/compensation

    Quote Originally Posted by Michael R View Post
    Perhaps a dumb question, but I'm wondering if the compensation feature of this unit works even at much shorter exposure times than would be used in printing. Say 1/10 second for example. The reason I ask is I thought it might be of use in a sensitometer build.

    Thanks
    Hi
    Try asking on the following website, Richard the designer of the RH designs range is a member and will probably pick up your question and give a definitive answer.

    http://www.film-and-darkroom-user.or...orum/index.php

  5. #5

    Join Date
    Dec 2009
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    1,663

    Re: RH StopClock Vario: light "integration"/compensation

    StopClock Vario is a compensating timer, I should have checked... Different concept than the feedback loop stabilizer that I have.

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