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question for the photography experts

updated tue 13 jun 00

 

africaunusual@MWEB.CO.ZA on mon 12 jun 00


There is a chemical that one can use to bleach away a photo.
Probably not colour pics.
If you draw over the photo with Indian ink, the ink does not bleach
away altogether but goes sepia toned and you end up with a
"sketch" Does anyone know what this chemical is?
I would be most grateful if anyone could help.
Toni Martens
And yes it is clay related the resultant "sketch" could then be
transfered onto bisque