I got an amazing deal on some almost new looking 4x4 filters. They're all Tiffen, Schneider, glass sandwich. I noticed that a couple of the Tiffen ones had what looks like delamination of the centre layer starting from the edges in a few places. Does anyone know what causes that? Is it solvents? Does it spread?
The Schneider ones have some sealant on the edges but the Tiffen ones look like they don't. Is it worth sealing those edges? I have some expertise with epoxy. Could easily do it.
Thanks for any ideas,
Tiffen filters, edge delamination?
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