Defect on BPF200

Discussion in 'B&W: Film, Paper, Chemistry' started by Guillaume Zuili, Apr 2, 2008.

  1. Guillaume Zuili

    Guillaume Zuili Subscriber

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    I have been processing 10 sheets of 8x10 in Jobo 3005 yesterday.
    On two sheets, the two I like (why is it always like that !!!), I have a woof (not sure of the word, it's trame in french) all over. Very fine dots all over.
    I'm pissed.
    Any clue of that ? Will post a scan of a print as soon as it's dried.

    G.
     
  2. PhotoJim

    PhotoJim Member

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    "trame" = web - like a mesh pattern I assume?
     
  3. Guillaume Zuili

    Guillaume Zuili Subscriber

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  4. Guillaume Zuili

    Guillaume Zuili Subscriber

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    Full print and detail.
    Thanks for any imput.
     

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  5. Rlibersky

    Rlibersky Member

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    Distilled water used? Really need more information. As you procaly know white spots are usually some foreign material introduced in developing. At least they are white so you can spot them. Much tougher if they are pinhole.
     
  6. Aurelien

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    If I were you I would send an email to guy gerard from bergger. He always answers.
     
  7. Guillaume Zuili

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    No distilled water this time but i don't think it's the cause, too regular. 2 minutes rinse, Agfa 8, water bath, fix, usual stuff always works fine...
    Rlibersky, it's not the white spots that are bothering me. it's that all mess of lines that are horizontal.
    Aurelien, I will send an email.
    Thanks,
    Guillaume
     
  8. Guillaume Zuili

    Guillaume Zuili Subscriber

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    Could it be the back of the film holder ?
     
  9. Ronald Moravec

    Ronald Moravec Member

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    If you see black specks on the neg that print white like this in random areas, it is precipitated silver from used fix. Sometimes filtering is sufficient for 4x5, never for 35mm.

    If used fix stands more than 24 hours, I can see the black flecks forming on the bottom of the glass bottle. They stick like glue to the next film, but can be rubbed off before drying. After drying, no way. Force streams of water will do no good.

    My problems went away when I stopped reusing film fix. I now use it up on test prints. I only use fresh fix on film I care about. Use glass bottles and clean them between use. Save and use for fix only.
     
  10. Bob F.

    Bob F. Member

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    This banding looks like a coating defect PE mentioned before - regular sinusoidal lines across the width of the film as it is coated. I can't remember if it was the head vibrating or the paper that was feeding incorrectly... No doubt as the US wakes up PE will let us know if it does look like it.

    Cheers, Bob.
     
  11. Rlibersky

    Rlibersky Member

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  12. Aurelien

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    What is the date on the box? Or the date of production? Cause I think that the last Forte production was not as good as usual. They may have worked as pigs... Cause I had problems too, but with papers...
     
  13. Guillaume Zuili

    Guillaume Zuili Subscriber

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    Aurelien -)...
    I have been using a stock of expired film from 2004.
    15 boxes brought from France when I moved here.
    This problem happens on my last box ! -)
    G.
     
  14. Aurelien

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    Ok, so I think it can't be a coating problem, but maybe a problem because of the age of your emulsion... no?
     
  15. Guillaume Zuili

    Guillaume Zuili Subscriber

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  16. Photo Engineer

    Photo Engineer Subscriber

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    This banding is too close together to be the defect I mentioned before.

    It reminds me of the marks we used to get on prints processed in Saran baskets many years ago.

    Without good agitation, the film took on this aspect.

    I have also seen this from cardboard or cheap paper making imprints on film. Cardboard and cheap paper use a wire in the compression of the fibres as they rise from the pulp slurry and they have a face and 'wire' side. The wire side has an inprint like that on paper that is not pressed enough.

    That looks like a packaging defect or a process defect of some sort. The method of introduction escapes me, but I have seen it before.

    PE
     
  17. Guillaume Zuili

    Guillaume Zuili Subscriber

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    PE,
    Each film has a paper interleave in the box, this is certainly that.
    Thanks,
    Guillaume