Heinrich Kühn is regarded one of the forefathers of fine art photography, the movement that helped photography to establish itself as an art on its own. His photographs closely resemble impressionist paintings, with their frequent use of soft lighting and focus. Kühn was part of the pictorialist photographic movement.
Kühn mainly used the gum bichromate technique, applied in several layers, and thus allowing for previously unseen color tonalities.
In 1911, Kühn invented the Gummigravüre technique, a combination of photogravure and Gum bichromate. In 1915 he developed the Leimdruck technique, which uses Animal glue as Colloid and produces pictures similar to gum prints. He also invented the Syngraphie, a forgotten technique that uses two negatives of different sensitivity to obtain a larger tonal spectrum.
Kühn used Autochrome from its appearance in 1907; his Autochromes have been called "ethereal dreams of childhood, full of vaulted sunny skies and giddy perspectives, as gloriously cathartic as they are emotionally charged".
- Ulrich Knapp (Text): Heinrich Kühn Photographien. Residenz Verlag, Salzburg 1988, ISBN 3-7017-0528-3.
- The History of European Photography 1900-1938, FOTOFO, 2011. ISBN 978-80-85739-55-8.
- Jeffrey, Ian (1999). ReVisions: An Alternative History of Photography. Bradford: National Museum of Photography, Film and Television. p. 81. ISBN 094848960X.
- Roberts, Pamela Glasson (2012). "Color photography". In Hacking, Juliet (ed.). Photography: The Whole Story. Munich: Prestel. pp. 276–277. ISBN 978-3791347349.
- Heinrich Kühn at photography-now.com
- Literature by and about Heinrich Kühn in the German National Library catalogue
- Heinrich Kühn at Luminous-Lint
- Photographs by Heinrich Kühn in the Bildarchiv Austria of the Austrian National Library
- Fostinum: Photographs by Heinrich Kuehn