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  1. #1
    andrewmoodie's Avatar
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    dark lines and sprocket holes

    These lines appear on some of the frames of a roll of film I processed recently. Is this a processing accident--like not enough chemicals in the tank?--or a faulty camera?

    Andrew
    Attached Thumbnails Attached Thumbnails sprocket fogging example.JPG  

  2. #2

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    bromide drag?

  3. #3
    Blighty's Avatar
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    looks like it too me!
    Norman is an island.Time and tide wait for Norman.

  4. #4
    Les McLean's Avatar
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    Could be that the fixer was near exhaustion. Try refixing in a fresh solution you have nothing to lose.
    "Digital circuits are made from analogue parts"
    Fourtune Cookie-Brooklyn May 2006

    Website: www.lesmcleanphotography.com

  5. #5
    John Bragg's Avatar
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    Hi Andrew, I have seen this only once before on one of my prints, and in my case, it was localised fogging of the paper, caused by light from the sprocket holes reflecting from an angled surface on the easel I was using.

  6. #6
    Stoo Batchelor's Avatar
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    Hi Andrew

    My very first film I developed had these very same marks on them. I contacted Ilfords technical team and the problem was put down to too much agitation in the first minute, bearing in mind that I was developing their film in Kodak HC110, so the develpoment time was very short.

    In the book 'The Darkroom Handbook' on page74, under Black and white negative errors, it reads;

    Surge marks,
    If your negatives have patches of uneven density adjacent to the sprocket holes, you have agitated the film tank too much. The developer solution has surged through the sprocket holes and created extra development in nearby areas.

    I must mention that also, on the same page, the negatives developed in exhausted developer look very similar, only they will have a veil of fog and yellow-ish gelatin stain (the authors words)

    I hope this helps

    Stoo
    _____________________________________________

  7. #7
    gainer's Avatar
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    Hills or holes?

    Quote Originally Posted by andrewmoodie View Post
    These lines appear on some of the frames of a roll of film I processed recently. Is this a processing accident--like not enough chemicals in the tank?--or a faulty camera?

    Andrew
    Which lined up with the sprocket holes holes and which with the spaces between? It's hard to see it being caused by a faulty camera. I have seen it with stand development by too strong a developer. Is it seen on the other side of the negative as well?
    Gadget Gainer

  8. #8

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    Quote Originally Posted by Alessandro Serrao View Post
    bromide drag?
    As I understand it the drag in bromide drag is a drag in
    development resulting is less density. My vote is for
    surge marks, essentially greater local agitation. Dan

  9. #9
    Anscojohn's Avatar
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    Quote Originally Posted by andrewmoodie View Post
    These lines appear on some of the frames of a roll of film I processed recently. Is this a processing accident--like not enough chemicals in the tank?--or a faulty camera?

    Andrew
    ******
    It is an agitation problem. You are, I believe, overagitatiting in the developer. Developer is coursing through the sprocket holes and giving you too much density in the areas where the flow is greatest.
    Anscojohn, Mount Vernon, Virginia USA

  10. #10
    fhovie's Avatar
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    Looks like over vigerous agitation to me.
    My photos are always without all that distracting color ...

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