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Physical restoration of Kodachrome

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Old 04-15-2010, 02:19 PM
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Tony W Tony W is online now
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Physical restoration of Kodachrome

I have just discovered dozens of 35mm Kodachromes dating from the mid 60's to early 70's. These had been forgotten about as thought to be lost.

Unfortunately a few exhibit the problems shown on the attached scan. I intend to restore at least some of the images but before starting out I would like to attempt physical restoration (after first making the best quality scan as a safety precaution). As yet I have not attempted any cleaning nor have I looked at the options to reduce effect using scanner corrections.

In the 'bad old days' before we knew better Carbon Tetrachloride was the favoured cleaning solution - something which I used quite a lot!. I believe that isopropyl alchohol may be the way to go but as I am unsure I hope that someone may be able to advise on best practice for dealing with this type of problem
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Old 04-15-2010, 02:21 PM
pixelzombie pixelzombie is offline
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Re: Physical restoration of Kodachrome

not sure what that is..if film cleaner didn't work on that i think we would use photo flo on transparencies...
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Old 04-15-2010, 02:36 PM
dkcoats dkcoats is offline
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Re: Physical restoration of Kodachrome

Looks like mold or mildew to me. Check out this thread.
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Old 04-15-2010, 03:19 PM
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Re: Physical restoration of Kodachrome

Thanks pixelzombie and dkcoats for the very quick replies.

Having now had chance to examine the slides with a magnifier it looks like the majority of the problems are on the base rather than the emulsion side. This at least looks hopeful for the start of a physical cleaning process.

Perhaps starting gently with a wetting agent such as Photo flo suggested by pixelzombie using a Q -tip? Ideally I wanted to keep the original cardboard mounts but if necessary will have to remount if further 'wet work' required.

dkcoats I did wonder if it could be mould or mildew (the slides were found in an old biscuit tin in the garage!). Thanks for the links the articles were food for thought - intrigued by the idea of freezing.

Anyway will have a trial run on an image that I do not consider too important.

Many thanks
Tony
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