| Josef von Berres Heliogravure auf geätzter Daguerreotypplatte von J. Berres 1840 1840 Fizeau process engraving from a daguerreotype (CHECK) 11 x 12.3 cm (image) 20.8 x 26.8 cm (overall) George Eastman Museum Gift of Eastman Kodak Company, ex-collection Gabriel Cromer, 1980.0276.0001 LL/69948 The phototype listed has as "Fizeau process engraving from a daguerreotype" may be incorrect. Berres (Christian Joseph Berres Edler von Perez 18 March 1796, Göding – 24 December 1844, Vienna) used a chemical etching method rather than the physical one used by Hippolyte Fizeau (1819-1896).
Lenia Oliveira Fernandes at the Rijksmuseum is researching the Berres process (October 2016).
Joseph Berres, “Photogenic Etching,” 5 September 1840, The Literary Gazette; and Journal of the Belles Lettres, Arts, Sciences, &c. (London) No. 1233, pp. 581–82
http://www.daguerreotypearchive.org/texts/P8400006_BERRES_LIT_GAZETTE_1840-09-05.pdf
Phototyp (nach der Erfindung des Professor Berres in Wien, 1840
https://www.rijksmuseum.nl/en/collection/BI-B-2644
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