John Henry Smith, Waldemar Merckens (Utocolor Company)
Subtractive 3 color: dye destruction process, bleach-out, still photography
“In 1906 John Henry Smith (1860–1917) and Waldemar Merckens commercially introduced a collodion paper impregnated with fugitive yellow, magenta, and cyan dyes. They called it Uto paper, after a range of mountains near Zurich (Johnson 1917: ...
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 209.
Pénichon, Sylvie (2013): Twentieth Century Colour Photographs. The Complete Guide to Processes, Identification & Preservation. London, Los Angeles: Thames & Hudson, p. 211.