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  1. #1
    mrtoml's Avatar
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    Wavy line on delta 3200

    Has anyone seen anything like this? I just developed 2 rolls of 120 delta 3200 in the same tank taken on the same day with the same camera. One of the rolls has this dark wavy line about 1cm wide line running intermittently along the whole length of the roll from one end to the other in an irregular sinusoidal pattern. Is this a film defect or has something else happened. I have never seen anything like this before.

    I have attached a scan of one end of the roll and a few other frames. You can see where the line starts. It runs right to the other end through all the images ruining the entire roll.



    Mark Tomlinson
    Currently using Bronica RF645+65mm, Leica M6, Bessa R2a, Nokton LTM 50/1.5, Zeiss Biogon ZM 35/2.8, Nikon 35mm SLRs.
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  2. #2
    tjaded's Avatar
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    X-Ray. Your film was exposed to x-rays at some point. Did you travel or buy your film via mail order?
    --------------------
    "Everytime I find a film or paper that I like, they discontinue it." -Paul Strand

    www.glasskeyphoto.com

  3. #3
    Ian Grant's Avatar
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    Quote Originally Posted by tjaded View Post
    X-Ray. Your film was exposed to x-rays at some point. Did you travel or buy your film via mail order?
    There's one flaw to that theory, this is the negative so the fogging would be the reverse - evenly fogged overall and then a light wavey line where something shielded the film from the X-rays.

    It may be caused by an led or something similar in the darkroom, or it might be a fault.

    Ian

  4. #4
    mrtoml's Avatar
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    FWIW both rolls came from the same batch of film and both have indeed been through XRay machines in the same bag (via carry-on baggage a couple of times). This is the first film from that batch that has shown this issue. The others have all been fine though I haven't developed every roll yet. Both were put on the reels in the same changing bag at the same time. The camera was a Mamiya 7ii.
    Mark Tomlinson
    Currently using Bronica RF645+65mm, Leica M6, Bessa R2a, Nokton LTM 50/1.5, Zeiss Biogon ZM 35/2.8, Nikon 35mm SLRs.
    Join the lith printing forum at http://www.lithprinting.net/

  5. #5
    Ian Grant's Avatar
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    I have to admit I'm wrong. Go see this link, it is X-ray damage. It's very unlikely to have happened at a UK Airport because all the BAA Airports upgraded early this years and the carry-on baggage scanners are totally safe, and have been for a few years now.

    Some airports aren't as safe for high speed films 100 ISO upwards, and countries like the US use slightly different machines to the UK which they don't claim are safe.

    Ian

  6. #6
    mrtoml's Avatar
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    Thanks Ian. Looks like it was the CAT type X-Ray machine. They obviously zoomed in on this roll which is why the others appear to be unaffected. The airport was Malta by the way.

    Cheers
    Mark
    Mark Tomlinson
    Currently using Bronica RF645+65mm, Leica M6, Bessa R2a, Nokton LTM 50/1.5, Zeiss Biogon ZM 35/2.8, Nikon 35mm SLRs.
    Join the lith printing forum at http://www.lithprinting.net/

  7. #7

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    I had exactly the same pattern on two rolls of 120 FP4+ a few years ago. The film was bought in the UK, exposed in Turkey and developed back in the UK. All other exposed film was fine. I've always thought it must have been X-ray but was never sure...now I know better.

    So, these guys can "zoom" in on any part of the screen, i.e. raise power levels selectively???

    From now on I shall explicitly state that the bag contains film.

    Cheers,
    omar

  8. #8
    mrtoml's Avatar
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    Quote Originally Posted by ooze View Post
    So, these guys can "zoom" in on any part of the screen, i.e. raise power levels selectively???

    From now on I shall explicitly state that the bag contains film.
    Yes. Apparently with some types of Xray machine they scan the whole bag with a low dose of XRay and then if they see anything that needs a closer look they can zoom in on it and increase the radiation levels. This is what causes the wavy lines. It's described in the link Ian posted.

    I didn't know about this and will be much more careful in future. The idea that Xray machines are all now safe with respect to film is not true.
    Mark Tomlinson
    Currently using Bronica RF645+65mm, Leica M6, Bessa R2a, Nokton LTM 50/1.5, Zeiss Biogon ZM 35/2.8, Nikon 35mm SLRs.
    Join the lith printing forum at http://www.lithprinting.net/

  9. #9
    Ian Grant's Avatar
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    You've been very unlucky Mark, I had some my films scanned at least 8 times three weeks ago with no problems at all. They'd already been scanned at Manchester Airport. The Italian made scanners on the Cruise ship had a very clear Manufacturers labels stating "Film safe".

    Ian

  10. #10
    mrtoml's Avatar
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    I agree that I have been unlucky. This is the first time I have ever encountered a problem. My big problem now is what to do with the other rolls that went through the machine, but have not been used. I guess I will just have to chuck them. I also still have a large batch of exposed film that went through so some of these may also be affected, but hopefully they will be mostly OK.

    Oh well...
    Mark Tomlinson
    Currently using Bronica RF645+65mm, Leica M6, Bessa R2a, Nokton LTM 50/1.5, Zeiss Biogon ZM 35/2.8, Nikon 35mm SLRs.
    Join the lith printing forum at http://www.lithprinting.net/

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