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Thread: Divided Procat HD

  1. #1

    Join Date
    Jan 2007
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    western ma
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    Divided Procat HD

    Have tried numerous times testing the divided pyrocat hd development. Can't seem to get it right. Film T Max 400 @ 250. Shadows placed in zone III, Sunlight Shed zone X.
    Development: In Jobo processor with continuous rotation.
    Presoak 5 min distilled water
    Pyro part A 1:10 5 min
    Pyro part B 1:10 5 min
    1 min plain water stop (distilled water)
    5 min TF 4 fixer
    Wash 30 min, distilled water changed every 10 min.
    Problem: blotches or streaking in sky area. Blotches have occcured in 3 different tests. Can't see any blotches other than the sky area.

    Appreciate any help
    Walter B. West Stockbridge, Ma.

  2. #2

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    Re: Divided Procat HD

    Quote Originally Posted by walterb View Post
    Have tried numerous times testing the divided pyrocat hd development. Can't seem to get it right.

    big snip . . .

    Problem: blotches or streaking in sky area. Blotches have occcured in 3 different tests. Can't see any blotches other than the sky area.

    Appreciate any help
    Walter B. West Stockbridge, Ma.

    Are you fixing the film in the drum or out?

    Sandy King
    http://www.sandykingphotography.com/
    For discussion and information about carbon transfer please visit the carbon group at Yahoo.
    https://groups.yahoo.com/neo/groups/...nTransfer/info

  3. #3

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    Re: Divided Procat HD

    Sandy
    In the drum

  4. #4

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    Re: Divided Procat HD

    I keep getting blotching too - and wondered if it was due to water from my well. The fact that you use distilled water, but get blotches too, points elsewhere.

    I follow the instructions carefully, and provide continuous agitation, but still get blotches. This is with FP4+ and HP5+.

    Using an infra-red viewing device, I can see the blotches before the film goes into the fixer. I see it when the negatives are in solution B.

    I don't use rotary processing, but trays (actually shoe containers).

  5. #5

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    Re: Divided Procat HD

    Ken and Walter,

    Are you using a pre-soak? I don't get blotches with Hypercat, but I use a pre-soak.

  6. #6

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    Re: Divided Procat HD

    Quote Originally Posted by Ken Lee View Post
    Using an infra-red viewing device, I can see the blotches before the film goes into the fixer. I see it when the negatives are in solution B.

    I don't use rotary processing, but trays (actually shoe containers).
    Ken,

    When do you see the blotches when the negative is in solution B? Right away or do they appear gradually?

    Also, is the blotchiness generally in one direction, or random. Looking at the botches in Walter's negatives they appear to be in the direction of the rotation of the drum. Anything in your case that could be associated with agitation in Solution A, or in how Solution A was drained?

    Sandy
    http://www.sandykingphotography.com/
    For discussion and information about carbon transfer please visit the carbon group at Yahoo.
    https://groups.yahoo.com/neo/groups/...nTransfer/info

  7. #7

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    Re: Divided Procat HD

    Sandy and Ken
    I use a 5 min presoak in the drum. I have run this test 3 times and 3 times the blotches
    appear in the same area of the film in the sky. I ran the test without sky in the exposure and could not see any blotches.

    walter

  8. #8

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    Re: Divided Procat HD

    Sandy & Ken

    Here is a negative from the same test developed in the same batch but no sky and no blotches, at least that I can see.

    walter

  9. #9

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    Re: Divided Procat HD

    If the blotches are appearing during development in Solution B my hunch is that they the reason is due to the mechanism of draining of Solution A. If that is so the blotches probably begin immediately as soon as the negative goes into Solution B. I am really interested to hear what Ken has to say about this since he has the infrared device and can observe the progress of development.

    Sandy
    http://www.sandykingphotography.com/
    For discussion and information about carbon transfer please visit the carbon group at Yahoo.
    https://groups.yahoo.com/neo/groups/...nTransfer/info

  10. #10

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    Re: Divided Procat HD

    In Solution A, there is no development of course, so there's nothing to see. I see the blotches in Solution B.

    In my case, the blotches run vertically along the edges of the photos. When I get some time, I will post some proofs.

    Over the weekend, I can run a test and look more carefully if that will help.

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