Sergey Prokudin-Gorsky (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sergey Prokudin-Gorsky" in English language version.

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  • Wagner, Jens (2006). "Die additive Dreifarbenfotografie nach Adolf Miethe" Archived 2014-03-28 at the Wayback Machine. Text in German only. The Bermpohl chromoscope and projector are shown in contemporary line engravings on pages 22 and 23 of the first section of this scholarly thesis. A Miethe-Bermpohl camera and a Miethe-Goerz projector are shown in detailed photographs on pages 1 through 7 of the color illustration section. Examples of Miethe's color photographs, some possibly as early as 1902, can be found in the same section.

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  • "Photographer to the Tsar: Sergei Mikhailovich Prokudin-Gorskii". Library of Congress. 17 April 2001. Retrieved 13 August 2006.
  • Blaise Agüera y Arcas (September 28, 2004). "Reconstructing Prokudin-Gorskii's Color Photography in Software". Library of Congress. Archived from the original on 2012-03-18. Regarding exposure times, although the author states (Figure 1) that "each exposure" in the example appears to have taken "upward of 20 seconds", it is plain from the animated pair of images that, as is more clearly expressed at the start of the same sentence, most of the moon's motion occurred between the exposures; the actual exposures account for only a minor fraction of that time. Various causes for an unusual delay or atypically slow operation of the camera's plate-shifting mechanism may be imagined. The moon is effectively invisible in the blue-filtered exposure, in which the sky appears as if white, so the author must necessarily be extrapolating a total time based on the other two exposures.
  • "The Prokudin-Gorskii Photographic Record Recreated: The Empire That Was Russia - Ethnic Diversity". Library of Congress. 17 April 2001. Retrieved 10 May 2013.
  • "The Prokudin-Gorskii Photographic Record Recreated: The Empire That Was Russia - Exhibition Home". Library of Congress. 17 April 2001. Retrieved 10 May 2013.
  • Robb, Andrew (May 2001), Albums, Photos, Glass Plate Negatives, Conservation Corner - Library of Congress Information Bulletin, May 2001 - Vol 60, No. 5
  • "All Exhibitions - Exhibitions (Library of Congress)". www.loc.gov.
  • Library of Congress Exhibition of Russian Photographs Opens in St. Petersburg on April 12, 2003, Library of Congress
  • "Color Photography Method. Library of Congress Prints & Photographs Online Catalog - Prokudin-Gorskii Collection". Library of Congress. 1905.
  • "Tipy Dagestana". Library of Congress. Retrieved 10 May 2013.

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  • The chronology at Prokudin-Gorsky.org Archived 2014-05-13 at the Wayback Machine (accessed 26 September 2012) reports six weeks of study with Miethe in 1902. Other accounts give the year as 1889, but a primary source for that extremely early date is not apparent and it does not accord with the circa 1889 biographical details of either man. The major English-language source reporting 1889 (Adamson and Zinkham, p. 108) describes Miethe as "A brilliant young professor at the Charlottenburg Technische Hochschule..." and states (footnote, same page) that "While in Berlin, Prokudin-Gorskii is said to have given technical courses in photochemistry and spectrum analysis at the Technische Hochschule...", which evidences confusion of the facts somewhere along the line: biographies of Miethe all agree that he, not Prokudin-Gorsky, was the professor of photochemistry and spectroanalysis at the Königlich Technische Hochschule in Berlin, a post he accepted by invitation in 1899 after the sudden death (17 December 1898) of its previous longtime occupant, Hermann Wilhelm Vogel, the discoverer of dye sensitization and himself a colour photography experimenter. It was apparently Miethe's first teaching position and the beginning of his involvement with colour photography. Until then he had been employed by optical firms such as Voigtländer but was already a notable author, journal editor and inventor in the field of (black-and-white) photography.
  • Simple "warts and all" color composites of all the Library of Congress plates are available at Prokudin-Gorsky.org (accessed 26 September 2012), often accompanied by cleaned-up versions with only overall adjustments to color balance and contrast and manual retouching to remove spots or repair damage, traditional procedures not usually regarded as crossing over the line into historical revisionism.
  • Prokudin-Gorsky.org chronology Archived 2014-05-13 at the Wayback Machine. Retrieved 26 September 2012. "October 13, 1906: At a meeting of the 5th section of the Imperial Russian Technological Society, Prokudin-Gorsky reports on his trip to the Lumière Brothers in Lyons, manufacturers of photographic plates, and demonstrates slides he had made using the Autochrome method".

forum.prokudin-gorsky.org

  • Prokudin-Gorsky.org forum page 10 (retrieved 26 September 2012, text in Russian only) shows twenty different examples. All are apparently glass-bound lantern slides, with at least one in the 3.25-inch-square British standard format. Some were made from negatives now in the Library of Congress, some from lost negatives previously known only from the albums of small black-and-white prints Prokudin-Gorsky routinely made from one of the three elements. Some are still life arrangements of unknown provenance, possibly from the 1920s, and two are circa 1935 portraits of his children. He appears to have used at least two different processes. In one category of specimens, all except the cyan layer has badly faded, typically contracting and splitting as well. This indicates both the use of unstable dyes and an assemblage of layers somewhat like that in the circa 1900 Sanger-Shepherd process, in which a stable cyan-toned image in an emulsion on glass was laminated with magenta and yellow dye images on very thin sheets of chemically unstable celluloid. The splitting is evocative of an earlier Lumière process that incorporated alternating layers of dissimilar materials. Another category of specimens shows neither drastic differential fading nor splitting. One slide in this latter category bears a labelthat explicitly credits a Prokudin-Gorsky process. The basic principle involved had been patented by Louis Ducos du Hauron in 1868. Other inventors later patented an array of specific implementations, variations and improvements, but though it sometimes produced excellent results, this kind of process was just too expensively labor-intensive to be practical for the commercial production of color slides.

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  • Professor Dr. Miethe's Dreifarben-Camera (retrieved 12 October 2012) features several photographs of the 9 x 24 cm model and a more detailed description of its operation, along with an abundance of related information. The Miethe-Bermpohl Dreifarbenkamera ("three-color camera") should not be confused with the much later Bermpohl Naturfarbenkamera ("natural color camera"), a very different "one-shot" type that simultaneously exposed three separate plates and was manufactured from 1929 until circa 1950.

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  • Callender, R. M. (2020). "Gorsky: Russia's Pioneer in Colour Photography". The Photo Historian. No. 188. Bristol: The Royal Photographic Society. pp. 13–17. ISSN 0956-1455.

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