I don't have a tried-and-true technique. After I made the best copy and
prints I would I'd try to flatten the acetate. If it was mine I'd put the
negative at 40-50%RH @ 68F between two pieces of glass. Then store it at a
warm temperature to not exceed 100F. (light bulb). I would let it sit for a
month with a book on the glass. This may allow the acetate to relax.
I'd open the sandwich once week to let the film acclimate to pickup some
humidity.
This is a low risk but unproven technique but it might work.
I can think of fancier and riskier techniques but I doubt if it is worth
the risk.
Bob
www.makingKODAKfilm.com
.
On Wednesday, March 4, 2020, 09:29:31 PM EST, Ken Hart
<kwhart1@xxxxxxxxxxxx> wrote:
Certainly someone knowledgeable will come up with a good answer. While we're
waiting, here's my lame, never-tried-this answer!
The problem is that film has layers. Both the film back and the emulsion are
creased (I assume). If you manage to flatten the backing, the fragile emulsion
will likely crack. Unless you can soften the emulsion layer. Soaking the film
may soften the emulsion and allow it to flex as you flatten out the film base.
Or it may completely destroy the image.
I think I would try to get the best possible print from it by putting it in a
glass carrier in the enlarger. If you stop down the enlarger lens, you might
increase the depth of focus enough to cover the crease. Once you have the best
print possible, then try soaking it in Photo-flo or equivalent. To hold it flat
while it is drying, maybe you could carefully sandwich the edges (sprocket
holes) between wooden craft sticks (tongue depressors).
Ken Hart
kwhart1@xxxxxxxxxxxx On 3/4/20 7:21 PM, mark@xxxxxxxxxxxxxxxxxx wrote:
Doing a project with very old family photos. I have a strip of 35mm negative
that on it says safety ILM 3 I think it is, but that isn't the biggest problem.
It was over the years creased like paper that had been folded. Some of the
folds are through the middle of the image. Any way to flatten.
I have no idea what is one them. Judging from the prints found with it, I
would wager a best guess of about 50 years. They don't appear to be scratched
up.
First idea is to contact print them with glass on top to see what I have. I
could probably copy them from a contact print, but would rather have the wet
print if possible. Would leaving them sandwiched between two plates of glass
with some weight on top do any good. Though about soaking them, but thought
better of that pretty quickly. Might or might not help. Ideas and thanks
everyone
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