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Swede
7-Feb-2021, 04:06
Hello!

Anyone have any idea what happens here?
When applying sandarac varnish the colours change and ruins the photo.
This happened a few random times and I have no idea how to avoid this.

/Roberthttps://uploads.tapatalk-cdn.com/20210207/95cca92372f5169e990854768e47f3a6.jpg

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Ethan
7-Feb-2021, 15:51
which photo is the one with the varnish? in my experience the varnish always makes the tone a bit warmer.

Swede
8-Feb-2021, 03:42
This one have varnish on it.
Almost like it dissolves and looses clarity.https://uploads.tapatalk-cdn.com/20210208/064653e5f2c8c0388e9e9ce521f9a576.jpg

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Bill Rolph
8-Feb-2021, 07:55
How old is your collodion?

Swede
8-Feb-2021, 09:57
How old is your collodion?Collodion is from August 2020

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Bill Rolph
8-Feb-2021, 10:33
Try mixing some new. Solvents in the varnish can dissolve images made with old collodion.

cuypers1807
8-Feb-2021, 16:49
Varnish can dissolve images off plates made with old collodion.

Swede
11-Feb-2021, 01:28
Not heating the plates solved the varnish problem.
Maybe the collodion is too old.

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