[Неизвестный мужчина сидел за столом] / Дж. Сент-Джон, фотограф и дебютант в области фотографии, и Овал Хэйвуд и Хеммс, Элкхорн, Висконсин.

Two cent postage stamp on verso.

The albumen silver print is a photographic printing process that was widely used in the 19th century. It involves coating paper support with a mixture of egg whites and salt, which creates a glossy surface to hold light-sensitive silver salts. The paper is then sensitized in a solution of silver nitrate, and exposed in a camera or under a negative. After exposure, the print is developed in a solution of gallic acid and silver nitrate, which reduces the silver salts to metallic silver and creates the final image. The albumen print process was widely used for commercial and fine art photography in the 19th century and produced high-quality, detailed images with a distinctive glossy finish.

люди белковые отпечатки cartes de visite портретные фотографии человек стол фотограф дилер альбомы палисандр кадры лосось Висконсин 1864 г. 19 век лот 6286 J St John Фото сверхвысокое разрешение высокое разрешение Святой Иоанн Сент-Джон библиотека Конгресса

01/01/1864

Library of Congress

http://www.loc.gov/

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