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Thread: Massive Dev Chart with Rotary?

  1. #1

    Join Date
    Apr 2022
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    New Jersey
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    34

    Massive Dev Chart with Rotary?

    Good evening. I just purchased the massive dev chart app. Is there any adjustments that need to be made for when using a JOBO rotary system?

    I thought the rotary process required less chemicals and possibly different times.
    Than you.

  2. #2

    Join Date
    Oct 2015
    Posts
    1,277

    Re: Massive Dev Chart with Rotary?

    Unless the MDC development time specially notes that it's a rotary time, then I usually drop about 15% off as a starting point. I know others who stick with the inversion time. Testing will tell the tale for your working methods.

  3. #3

    Join Date
    Jan 2019
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    626

    Massive Dev Chart with Rotary?

    Usually the answer is in the developer or the film manual. And usually, without pre wash itís 10-15% shorter for continuous rotation, and no change with pre-wash. But different ones make different suggestions (and some film manufacturers donít recommend pre-wash).

    Ultimately you need to try it for yourself and determine it for your own processing. However the above is a good starting point.

  4. #4

    Re: Massive Dev Chart with Rotary?

    I always do a pre-wash when using my ATL processors and do not adjust time.

  5. #5

    Join Date
    Jul 2020
    Location
    Michigan
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    21

    Re: Massive Dev Chart with Rotary?

    Like Kiwi7475 and sperdynamite, I have found that doing a prewash and don't adjust the time with my jobo.

  6. #6

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    Re: Massive Dev Chart with Rotary?

    I prewash and don't adjust the time.

  7. #7

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    Oct 2006
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    BC, Canada
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    Re: Massive Dev Chart with Rotary?

    You could try going into the Time/Temperature conversion. There's a query in there as to whether you'll be agitating constantly or not. I think it just deducts 15% from your dev time. My ATL-1000 runs BW at 24C so that conversion tool works out pretty handy for temperature too.

  8. #8

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    Apr 2022
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    Re: Massive Dev Chart with Rotary?

    15% seems to be the consensus. However there are exceptions, I see one of them being if you prewash the film it does not have to be deducted off of your development time. I think I’m going to do that.

  9. #9

    Join Date
    Oct 2015
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    1,277

    Re: Massive Dev Chart with Rotary?

    Quote Originally Posted by Tomsmac View Post
    15% seems to be the consensus. However there are exceptions, I see one of them being if you prewash the film it does not have to be deducted off of your development time. I think I’m going to do that.
    Try it both ways. I do pre-wash my film and I still reduce development time by about 10 - 15%.

  10. #10

    Join Date
    Mar 2012
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    Re: Massive Dev Chart with Rotary?

    Same here -15%

    FYI: The prewash works best for me for nice even dev

    Quote Originally Posted by Alan9940 View Post
    Try it both ways. I do pre-wash my film and I still reduce development time by about 10 - 15%.

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