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Mark Osterman
Photogenic drawing processed with Talbot’s four methods of keeping them. From left to right: iodide fixed, chloride fixed, bromide fixed and “washed out” with hyposulfite of soda as it was known at that time.
2017
Photograph
Private collection of Mark Osterman
LL/117374
Prepared at a workshop given by Mark Osterman at Laycock Abbey, 2017.
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LuminousLint 
@LuminousLint