The Collodion-Albumen process is one of the early dry plate processes, invented by Joseph Sidebotham in 1861.
The process lacked economical success because the plate was much less sensitive (about 1/4)[clarification needed] and tended to have harder contrasts than wet plates. While the first was acknowledged by Sidebotham, the latter were disputed by him indicating the fact that the 1860 gold medal for the best landscape photography was made with a Collodion-Albumen plate (Recreative Science, 1861 P 43).
Processedit
There are several compounds unstable to light in this mixture, mainly silver iodine and silver bromide. These decompose and leave silver that is oxidized by the developer (Pyrogallic Developing Solution). The excess of silver iodine and silver bromide are stabilized by the fixing bath. The albumen mixture just encloses the Collodion in a dry environment.
Sourcesedit
The Collodio-Albumen Process of Photography, Joseph Sidebotham (London : Recreative Science Vol II 1861)
History of Photography, Josef Maria Eder (Dover Publications, Mineola, NY, 1945)
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collodion, albumen, process, this, article, includes, list, references, related, reading, external, links, sources, remain, unclear, because, lacks, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, october, 2010, . This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help improve this article by introducing more precise citations October 2010 Learn how and when to remove this message The Collodion Albumen process is one of the early dry plate processes invented by Joseph Sidebotham in 1861 The process lacked economical success because the plate was much less sensitive about 1 4 clarification needed and tended to have harder contrasts than wet plates While the first was acknowledged by Sidebotham the latter were disputed by him indicating the fact that the 1860 gold medal for the best landscape photography was made with a Collodion Albumen plate Recreative Science 1861 P 43 Process editThere are several compounds unstable to light in this mixture mainly silver iodine and silver bromide These decompose and leave silver that is oxidized by the developer Pyrogallic Developing Solution The excess of silver iodine and silver bromide are stabilized by the fixing bath The albumen mixture just encloses the Collodion in a dry environment Sources editThe Collodio Albumen Process of Photography Joseph Sidebotham London Recreative Science Vol II 1861 History of Photography Josef Maria Eder Dover Publications Mineola NY 1945 nbsp This photography related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Collodion albumen process amp oldid 1186135793, wikipedia, wiki, book, books, library,
