St Stephen’s Cathedral, Vienn
Immediately after the invention of the daguerreotype process was announced in August 1839 in Paris, the Viennese doctor Joseph Berres began experimenting with etching the photographic plates in nitric acid, then printing them directly onto paper using an intaglio press. His technique was quite successful, as is apparent in this booklet, called ‘Phototyp,’ which Berres sent to the Dutch Academy of Sciences in 1840.