Sprocket holes appearing in middle of frame

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davidefontaine

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Dec 16, 2010
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Hi,

I got this problem on my last roll of film: you can see edges of one frame embedded in the middle of another see attached image. I developed using hewes reels in a steel tank. When I unwound the film it didn't appear to be wound on incorrectly. I may have overfilled the tank with chemicals. The film was expired so I added about a 45 seconds of dev time.
 

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Maybe the film was touching during developing and not allowing enough developer to get to the emulsion surface...if it's just the one frame this could be it...by the looks of the shadow it has some clean crisp lines to it so it had to be making contact...
Are any other frames ruined by this...???
 
I've seen light leaks that have sprocket holes in them, but they're usually towards one side of a negative. You'll also see them in sequence along the same side.

Yours is really unusual. I'd say it could have been fogged during development? No idea how. I only say this because the frames look so crisp.
 
It does look like a small section of film may have been been bowing to allow the film edge to fall out of the spindle and rest on the lower row of film.
I can't see any other reason how that mark could happen...
 
Strange indeed - but I do not see any hints of under development. I would expect more streaky and/or milky results. This is just too clean and sharp. On top of that - the sprocket holes are there twice! Could this be some kind of reflection? There seem to be two spots of light leaks - did anything go wrong during the loading/unloading of the film? Imagine - when you take the film out of canister (in the dark of course) - it is still strongly spooled, but the spool can go loose to sides - if at that moment sudden slight exposure (flash, spark) happens, something like this could in theory come out. But I am just guessing ... :confused:
 
Could you check if it's on both the scan and neg or just the scan? Might be ghosting during the scan. Who knows?
 
Hi guys,

In all cases it is on both the negative and the scan. I just developed two more rolls today and neither appear to have the problem, but I'll know for sure tomorrow when they are done drying. Right now my main idea is that light got in through the hand holes in the changing bag. The elastic was a bit limp around my right wrist. Today I kept the sleeves pulled up onto my forearms so that the elastic was tight.
 
I kind of like the light leak during loading the reel but to continue down that road I would want to see about six frames before and after this one. Can you scan them for us?

B2 (;->
 
I had the same thing happen once. Metal tanks can and do sometimes leak light around the lid lip. If the negs have no milky streaking then what happened was the light leak reflected off the shiny side (non-emulsion side) of the neg and burned the image into the frame.

I now use Patterson plastic tanks and reels since my old metal tanks suffered from light leaking..

Anytime you have film contact on another part of the film during development you get milky streaking so film touching is not the problem if there is no streaking..
 
BillBingham2 said:
I kind of like the light leak during loading the reel but to continue down that road I would want to see about six frames before and after this one. Can you scan them for us?

B2 (;->
Click to expand...

Hi Bill,

I scanned all the negs but am unsure of the sequence. Some of the negs have no problems, others have these sprocket holes nearer the top or bottom.
 
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