Problem with reels

Discussion in 'Darkroom Equipment' started by davide, Jan 20, 2011.

  1. davide

    davide Member

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    Hi,

    I'm not sure if this is the right forum for this question as I'm not sure what part of my image supply chain is having issues. My last couple rolls have ghost images of sprocket holes on them as shown in the attached image. I wound the rolls on Hewes reels. This only the second pair of rolls I've developed. The first did not have this issue. Any idea what could be causing this? Many of the frames have these sprocket holes overlays but in different parts of the frame.

    Edit: I originally said last couple but only one of the rolls exhibited the sprocket hole problem below. The other role had severe fogging in some frames though. Since my changing bag is small I load the first roll in the tank. Then open the bag and remove the empty cansiter while putting in the second canister. I then close the bag and load the second roll.
     

    Attached Files:

    Last edited by a moderator: Jan 20, 2011
  2. David William White

    David William White Member

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    The image is sharp so you definitely had film in contact with film, but if this was done on a reel, I don't get the geometry. Did you examine how nicely the reel was loaded after you pulled it from the tank?
     
  3. davide

    davide Member

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    Thanks for the quick reply. It appeared to be loaded fine when I unspooled it, but I did it too quickly to tell for sure. I am using the Hewes reels with prongs. Could this have occurred from catching the sprockets unevenly on the prongs (so the first sprocket and the left side and the second sprocket on the right side are on the prongs)? Or maybe from winding too tightly?
     
  4. monodave

    monodave Member

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    Looks like 2 layers of film sprockets exposed on top of your image. They also look parallel to each other quite a distance from the edge, not angled as they would be if not loaded correctly. Could low light exposure have happened at loading/unloading the camera or loading the reel before processing? As it's on 2 rolls processed separately it could be your procedure. It can't be strong light piping through the cassette mouth velvet as the film can't move apart by that amount. Looks like you need to do a few tests.
     
  5. davide

    davide Member

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    Maybe my light was getting in through one of the hand holes in the light bag? I wear latex gloves when I use the bag and it's sometimes hard to get my hands in and out.
     
  6. holmburgers

    holmburgers Member

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    That seems reasonably possible.

    I always try to wear long sleeves, and get them under the sleeves of the darkbag, which I then push up as far as possible on my arms (above the elbows).

    I don't trust em as far as I can throw 'em! :wink:
     
  7. fschifano

    fschifano Member

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    Why are you using latex gloves in the dark bag anyway? There is really no need for it. And yes, you should get your arms in there up to your elbows
     
  8. MattKing

    MattKing Subscriber

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    If you are worried about fingerprints, cotton gloves are a better idea.
     
  9. davide

    davide Member

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    I assumed that the gloves would protect the film from fingerprints. They ended up just making it very hard to do anything by restricting my sense of touch.
     
  10. Shadowtracker

    Shadowtracker Member

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    It almost looks like a light leak from taking the empty canister out of the changing bag when getting ready to work on the second reel. That's my first impression. It is clear though - one on the front of the cat and two in front of the back leg of the cat; that makes me think it could be the cut off leader in addition to a light leak that caused it. That would imply technique in my opinion. But testing in controlled, step by step, room lights on, room light off-type procedures would be needed. If you cut the leader off, and had to take your hands out of the changing bag for something, that could explain one possible light leak. Just trying to throw ideas out here to be considered.

    I suppose your changing bag could be going bad too. Was it washed in with some kind of detergent?
     
  11. GeorgesGiralt

    GeorgesGiralt Member

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    Hello !
    If this is a changing bag issue (taking light in one way or another) you could try to use you changing bag next time with the lights on the room turned off. This way, the remaining lighting will, likely, be too low for pouring in the changing bag. And devise from here as for an explanation or a solution.
    If the ghost sprocket have been closer to the edge of the image I would have thought of excessive agitation during development causing more action of developer around the sprocket holes. But it seems unlikely.