Finger marks on the back of 120 film

larfe · Jul 12, 2016

Hi Apug,

I just want to find out if anyone knows how to remove finger prints from the back (non emulsion side) of 120 film.
They probably got there after drying but seem to be burned into the backing (rolls were developed last week).

I've tried Isopropyl alcohol and rewashed followed by a wetting agent to no avail. Are these negs ruined?

amellice · Jul 12, 2016

larfe said:
Hi Apug,

I just want to find out if anyone knows how to remove finger prints from the back (non emulsion side) of 120 film.
They probably got there after drying but seem to be burned into the backing (rolls were developed last week).

I've tried Isopropyl alcohol and rewashed followed by a wetting agent to no avail. Are these negs ruined?

you may try to soak the film and using your thumb, very gently rub where the marks are. don't over do it

jeffreyg · Jul 12, 2016

You might try PEC 12. Try it first on a negative that is not important.

http://www.jeffreyglasser.com/

Ian Grant · Jul 12, 2016

Just remember that 120 film has an anticurl gelatin layer this can be scrtached/damagee, with a few films it can even reticulate. So you need to take care clean hands when handling film, loading reels etc.

Ian

larfe · Jul 12, 2016

Ian Grant said:
Just remember that 120 film has an anticurl gelatin layer this can be scrtached/damagee, with a few films it can even reticulate. So you need to take care clean hands when handling film, loading reels etc.

Ian

Is this on the back side of the film (not emulsion)? It's the only thing so far that could explain it, although the film totally curls...

Marco Buonocore · Jul 12, 2016

Another vote for PEC 12 - it does a fantastic job with oils, both on prints and negatives. Follow the instructions and use very sparingly, a little of that stuff goes a long way.

larfe · Jul 12, 2016

yeah I've only heard good things about PEC 12

Ian Grant · Jul 12, 2016

larfe said:
Is this on the back side of the film (not emulsion)? It's the only thing so far that could explain it, although the film totally curls...

Yes, the non emulsion side.

Ian

larfe · Jul 12, 2016

Sounds like a job for PEC 12 then

Thank you all

larfe · Jul 13, 2016

Christ no luck with PEC 12...

jeffreyg · Jul 13, 2016

You may have had some chemical residue on your fingers that reacted with the developer or fixer and not noticed the defect until the film dried. Try printing one to see if or how noticeable it might be. You could possibly spot the prints. Worst case, if you can't reshoot then scan the negatives and correct with software. Always avoid touching the image portion of a negative. When loading a reel for developing make sure your hands are clean and dry and only handle the edges of the film. If you are new to developing film, waste a roll and practice loading the reel.

http://www.jeffreyglasser.com/

Finger marks on the back of 120 film

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