Daguerreotype
Invented by Louis-Jacques-Mandé Daguerre and introduced worldwide in 1839, daguerreotype was almost completely superseded by 1860 with new, less expensive processes yielding more readily viewable images. In the late 20th century, there was a revival of daguerreotypy by a small number of photographers interested in making artistic use of early photographic processes.
Photography in Denmark
A number of other techniques developed in parallel with the use of daguerreotypes. The ambrotype, using collodium to produce a positive image on glass, and the pannotype, also collodium-based, were both used in Denmark from around 1855. Negative-based paper prints, used from the beginning of the 1850s, were produced on salt paper until around 1857 when salt was replaced by albumen. Collodion emulsion chloride paper was used from 1865 and in 1880 gelatin emulsion paper was introduced.