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Vintage-Views Antique Prints and Maps :: Antique Prints :: Scientific :: Photography :: PHOTOGRAPHIC EQUIPMENT, PHOTOGRAPHISCHE APPARATE,1894 Original Antique Wood Engraving

PHOTOGRAPHIC EQUIPMENT, PHOTOGRAPHISCHE APPARATE,1894 Original Antique Wood Engraving

Photography is the process of making pictures by means of the action of light. Light patterns reflected or emitted from objects are recorded onto a sensitive medium or storage chip through a timed exposure. The process is done through mechanical, chemical or digital devices known as cameras. The word comes from the Greek words phos ("light"), and graphis ("stylus", "paintbrush") or graphê, together meaning "drawing with light" or "representation by means of lines" or "drawing." Traditionally the product of photography has been called a photograph. The term photo is an abbreviation; many people also call them pictures. In digital photography, the term image has begun to replace photograph. (The term image is traditional in geometric optics.) For centuries images have been projected onto surfaces. Artists used the camera obscura and camera lucida to trace scenes as early as the 16th century. These early cameras did not fix an image, but only projected images from an opening in the wall of a darkened room onto a surface, turning the room into a large pinhole camera. The phrase camera obscura literally means darkened room. The first photograph was an image produced in 1826 by the French inventor Nicéphore Niépce on a polished pewter plate covered with a petroleum derivative called bitumen of Judea. Produced with a camera, the image required an eight-hour exposure in bright sunshine. Niépce then began experimenting with silver compounds based on a Johann Heinrich Schultz discovery in 1724 that a silver and chalk mixture darkens when exposed to light. In partnership, Niépce, in Chalon-sur-Saône, and Louis Daguerre, in Paris, refined the existing silver process. In 1833 Niépce died of a stroke, leaving his notes to Daguerre. While he had no scientific background, Daguerre made two pivotal contributions to the process. He discovered that exposing the silver first to iodine vapour, before exposure to light, and then to mercury fumes after the photograph was taken, could form a latent image. Bathing the plate in a salt bath then fixes the image. In 1839 Daguerre announced that he had invented a process using silver on a copper plate called the Daguerreotype. A similar process is still used today for Polaroids. The French government bought the patent and immediately made it public domain. William Fox Talbot had earlier discovered another means to fix a silver process image but had kept it secret. After reading about Daguerre's invention Talbot refined his process, so that it might be fast enough to take photographs of people. By 1840, Talbot had invented the calotype process. He coated paper sheets with silver chloride to create an intermediate negative image. Unlike a daguerreotype a calotype negative could be used to reproduce positive prints, like most chemical films do today. Talbot patented this process, which greatly limited its adoption. He spent the rest of his life in lawsuits defending the patent until he gave up on photography. Later George Eastman refined Talbot's process, which is the basic technology used by chemical film cameras today. Hippolyte Bayard had also developed a method of photography but delayed announcing it, and so was not recognized as its inventor. In 1851 Frederick Scott Archer invented the collodion process. Photographer and children's author, Lewis Carroll, used this process. Slovene Janez Puhar invented the technical procedure for making photographs on glass in 1841. The invention was recognized on July 17th 1852 in Paris by the Académie Nationale Agricole, Manufacturière et Commerciale.

Published for Joseph Meyer Meyers Konversations

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SKU	0527712k6
Quantity in stock	1 item(s) available
Price:	US$20.00

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