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- May 28, 2015
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Can anyone tell me what this may be? So far I've got it on two rolls so far. Delta 400 in HC-110 and FP4 in Ilfasol 3. Humidity? x-ray damage? Bad stop bath? Fixer was new-ish.
View attachment 223216
Not strictly accurate - but there was a period of around 30 years from 1970 to 2000 where you didn't see it very often.Backing paper. Isn't it strange how this never seemed to be an issue in the past?
Backing paper. Isn't it strange how this never seemed to be an issue in the past?
Backing paper. Isn't it strange how this never seemed to be an issue in the past?
Not strictly accurate - but there was a period of around 30 years from 1970 to 2000 where you didn't see it very often.
...a time period in which film was in it's prime - high production and high usage. I doubt there was much hoarding of film and freezer storage was much less common. I believe the current trend of buying a bunch of film and storing it for later has contributed to the previously uncommon problem of moisture affecting the backing paper.
...a time period in which film was in it's prime - high production and high usage. I doubt there was much hoarding of film and freezer storage was much less common. I believe the current trend of buying a bunch of film and storing it for later has contributed to the previously uncommon problem of moisture affecting the backing paper.
If the film went into a sealed bag in warm, humid conditions, and was then subjected to cooler temperatures and reduced pressure (air travel in the cabin), there is a good chance the conditions inside the bag crossed the dew point and there was condensation. The film and the backing paper would absorb some moisture, and it would have little chance of escaping in the closed environment.
So far, all the issues have been with Ilford. The new Kodak Tmax400 backing paper seems fine.
+1If it's roll film, I'd question the backing paper myself !
John S
Do you mean all of your issues? This is the first I've heard of any backing paper issues with Ilford. Kodak got hit real bad for a couple years.
Right, all of the current issues with my travel pictures. Kodak roll was fine. Fp4 and delta 400 not. Going to develop a roll of delta 100 tonight.Do you mean all of your issues? This is the first I've heard of any backing paper issues with Ilford. Kodak got hit real bad for a couple years.
This sounds plausible. When you go from 90°F actual temperature and 80°F dew point to cold temperatures it's reasonable that you could have a "fog" of water condense on the rolled up film. I'm pretty careful, but I've taken 120 film from a refrigerator and loaded in a camera indoors without a problem. I've never gone from tropical to cool conditions with unwrapped film that I really recall.The hypothesis in a private thread with another user seems to be that I put the exposed film (all new stock, never refrigerated) in a plastic bag while still in a hot, humid environment, and when I ran through multiple airports and lots of air conditioning on m way home, the humidity in the bag had no where to go besides into the film/backing paper/emulsion. Lesson learned, I guess.
True.Film is sealed after converting at a controlled climate. At least that is the industry standard.
As I said in the past I do not see how originally sealed film could get harmed during freezing and defreezing.
To get below the dew point one only needs to seal the film at 20° and 50% humidity and then do a walk on a european autumn day. No need for a freezer....
There are two other current threads on Photrio regarding Ilford backing paper (or at least that's what some are suggesting as potential problems). It is odd that these issues are cropping up.
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