Gamle fotos genskabt |
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Prutterhunden
Staff Oprettet: 14 Okt 2007 Sted: Frederiksberg Status: Offline Point: 30306 |
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Sendt: 24 Jun 2018 kl. 02:45 |
Gamle fotos af typen daguerreotypi, opfundet af L.J.M. Daguerre i 1837 har været skjult for vore øjne i mange år, men en ny metode kan genskabe dem. Måske vi igen kan se millioner af de allerførste fotografier helt tilbage fra den tid.
Citater med fremhævelser: "Art curators will be able to recover images on daguerreotypes, the earliest form of photography that used silver plates, after a team of scientists led by Western University learned how to use light to see through degradation that has occurred over time. Research published today in Scientific Reports – Nature includes two images from the National Gallery of Canada’s photography research unit that show photographs that were taken, perhaps as early as 1850, but were no longer visible because of tarnish and other damage. The retrieved images, one of a woman and the other of a man, were beyond recognition. Invented in 1839, daguerreotype images were created using a highly polished silver-coated copper plate that was sensitive to light when exposed to an iodine vapour. Subjects had to pose without moving for two to three minutes for the image to imprint on the plate, which was then developed as a photograph using a mercury vapour that was heated. As the first commercialized photographic process, the daguerreotype is thought to be the first “true” visual representation of history. Thousands and perhaps millions of daguerreotypes were created over 20 years in the 19th century before the process was replaced." Western-led research team uncovers lost images from the 19th century using 21st century tech - Media Relations Citat fra Daguerreotypi - Wikipedia: "Den første danske daguerreotypist var guldsmeden Mads Alstrup (1808-1876), som etablerede sit atelier i Herkulespavillonen i Kongens Have. Andre kom hurtigt til og de næste 10-15 år blev der over hele Danmark optaget mange daguerreotypiportrætter med kulmination i årene 1854-55. Efter aviserne at dømme blev der fremstillet utrolig mange daguerreotypier og i alt har der virket op mod 225 daguerreotypister i kortere eller længere perioder."PS. Læg mærke til kvindens venstre hånd på fotoet, der synes at mangle lillefingeren. Om det virkelig var således, eller hun har bevæget hånden under optagelsen, vil vi næppe få svar på, da kvinden er ukendt. |
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