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Thread: Grain clumping?

  1. #1
    bill h's Avatar
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    Grain clumping?

    Never seen anything like this. Arista 100 (shot at 50) developed in split 23, fairly fresh (about a month old, well within capacity) normal except somewhat shorter time due to temperature (about 72). Water stop. Fixed in TF4.
    The B side, developed in straight Xtol, was completely normal.

    Dumped the developer, which appeared normal too, greenish after the Arista.
    Shoulda used caffinol.

    bill h
    Attached Thumbnails Attached Thumbnails 1223-114a.jpg  
    Last edited by bill h; 06-29-2012 at 10:57 PM. Click to view previous post history. Reason: spelling

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    In the upper part of the pic, the filth has been rubbed off. How did you do that?

    And what's a B-side?

    Mark Overton

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    lxdude's Avatar
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    Don't do spray-painting in the darkroom.
    I do use a digital device in my photographic pursuits when necessary.
    When someone rags on me for using film, I use a middle digit, upraised.

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    I've seen something like this on 35 mm film that allegedly got dropped in a pond, found and developed only much later.

    (Grain clumping is a controversial issue.)

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    When I worked in a lab I've seen this happen either with VERY old film someone tried to process, or if someone had dropped their film in a pool/tub/whatever wet resulting in the film sticking to itself. Any possibility it got loaded bad? Or do you cold store your film and/or live in a humid area?

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    It doesn't look like "grain clumping" to me. Looks like you got some junk on your film and you cleaned some of it away with your finger, hence the fingerprint.

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    I once washed some film right after utility workers did maintenance on the water mains on my street. All kinds of grit was on/embedded in the emulsion after I washed the film. I bought a filtration system not long after. Your film looks like you have a water/dirt/scum problem of some kind.

    Peter Gomena

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    Photo Engineer's Avatar
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    Not clumping. No such thing.

    If it is not dirt or another processing problem, it came from the actual manufacturing process, which I doubt.

    You did this somehow during the process - that is my opinion.

    PE

  9. #9
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    Quote Originally Posted by bill h View Post
    Never seen anything like this. Arista 100 (shot at 50) developed in split 23, fairly fresh (about a month old, well within capacity) normal except somewhat shorter time due to temperature (about 72). Water stop. Fixed in TF4.
    The B side, developed in straight Xtol, was completely normal.

    Dumped the developer, which appeared normal too, greenish after the Arista.
    Shoulda used caffinol.

    bill h
    What on earth are you talking about?

    “The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention”

    Francis Bacon

  10. #10
    bill h's Avatar
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    Oh it is definitely something that I or my chemistry caused. There is no dirt on the negative, the pattern is in the emulsion. The apparent wipe marks -- well I am probably not the cleanest worker ever, I don't believe I could have done that sort of handling. There were four holders all from the same batch of Arista, and the resulting negatives were processed 4 and 4; first four in Xtol, they were normal; second four, one from each holder, processed in Thornton formula D23, two part, A and B. There are no marks on either side of the film that would suggest fingerprints, though the clear area does show what appears to be a fingerprint. Not guilty.
    My reason for posting is curiosity, I've never seen anything like this; not worth much effort. More testing tonight with fresh developer.

    Thanks for your ideas. Bill h



 

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