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The date behind World Photo Day originates from the invention of the Daguerreotype, a photographic processes developed by Joseph NicA?phore NiA?pce and Louis Daguerre in 1837. A Worldwide Photography Celebration - World Photo Day 2016, August 19World Photo Day is an international photography event on August 19th that celebrates the passion for photography in our communities. Sean Ebel : LIST OF INVENTIONS AND INVENTORS BUT ALLAHSa€™S PEOPLE ARE CONSPICIOUS BY THEIR ABSENCE!
Beyond the NegativeIt is unclear to me whether it were Henry Fox Talbot or Louis Daguerre, or possibly some other unnamed fellow who first transferred a positive image onto paper from a negative. 1906: Availability of panchromatic black and white film and therefore high quality color separation color photography. Porta (1541-1615), a wise Neapolitan, was able to get the image of well-lighted objects through a small hole in one of the faces of a dark chamber; with a convergent lens over the enlarged hole, he noticed that the images got even clearer and sharper. Though he is most famous for his contributions to photography, he was also an accomplished painter and a developer of the diorama theatre.


Schulze mixes chalk, nitric acid, and silver in a flask; notices darkening on side of flask exposed to sunlight. The alchemist Fabricio, more or less at the same period of time, observed that silver chloride was darkened by the action of light. It was only two hundred years later that the physicist Charles made the first photographic impression, by projecting the outlines of one of his pupils on a white paper sheet impregnated with silver chloride. The photos were turned into lantern slides and projected in registration with the same color filters. In 1802, Wedgwood reproduced transparent drawings on a surface sensitized by silver nitrate and exposed to light. Nicephore Niepce (1765-1833) had the idea of using as sensitive material the bitumen, which is altered and made insoluble by light, thus keeping the images obtained unaltered.
He communicated his experiences to Daguerre (1787-1851) who noticed that a iodide-covered silver plate - thedaguerreotype -, by exposition to iodine fumes, was impressed by the action of light action, and that the almost invisible alteration could be developed with the exposition to mercury fumes.


It was then fixed with a solution of potassium cyanide, which dissolves the unaltered iodine.The daguerreotype (1839) was the first practical solution for the problem of photography. In 1841, Claudet discovered quickening substances, thanks to which exposing times were shortened.
More or less at the same time period, EnglishWilliam Henry Talbot substituted the steel daguerreotype with paper photographs (named calotype).
Niepce of Saint-Victor (1805-1870), Nicephorea€™s cousin, invented the photographic glass plate covered with a layer of albumin, sensitized by silver iodide. Maddox and Benett, between 1871 and 1878, discovered the gelatine-bromide plate, as well as how to sensitize it.



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