Short history of the genesis of photography

 

 

1826:   Creation of the oldest known picture (Heliograph) by Joseph Nicéphore Niépce (1765-1833).

1839:   Begin of the photography as a usable technique in France as well as in England. In France it was Louis-Jacques-Mandé Daguerre (1789-1851), who developed a technique at which a polished brass plate covered with silver, or in rare cases a silverplate, was made photosensitive by iodine fume. After lighting the silverplates were developed with fumes of heated mercury silver. A rather dangerous process with a splendid result that was called the “daguerreotype” (1839-ca.1855).   

1841:   William Henry Fox Talbot (1800-1877) developed in England a similar technique. Talbot didn't use silverplates but very strong writing paper. The paper was immersed in a solution of kitchen salt and afterwards coated with silvernitrate. That simpel chemical reaction produces silverchloride, a photosensitive matter. Talbot called his first pictures “photogenic drawings” and his technique is also called “talbotype” or “kalotype”.

1850:   Louis-Désiré Blanquart-Evrard (1802-1872)covered a fine smooth paper with a coating of albumen, just before he made the paper photosensitive. The result was a smooth half glossy printing paper, which kept all the aspects of the original negative. This process has been used till c.1890 and was well-known as “albumine print”.

1851:   The “wet collodium process” was developed by Frederick Scott Archer (1813-1857). A glass plate was covered with a small quantity of collodium, enriched with iodide of potassium. When the volatile material in the collodium solution nearly was evaporated, the glass plate was handled with a solution of sivernitrate. The now photosensitive plate could be exposed in the camera.  

1854:   Shortly after the discovery of the "wet collodium process" a new technique was developed. An underexposed negative (not suitable for normal prints) created a positive image on a dark background. A suitable image for the process was created by adding nitric acid to the developer and to expose and develop the negative very briefly. The pictures were known in England as “collodium positives on glass”, in Amerika as “ambrotypes” and on the European continent as “amphitypes”.

1855:   The Frenchman “Alphonse Louis Poitevin”(1819-1882) takes a patent on an ink process based on using a printplate with a structure in relief.

1856:   The first real “dry collodium plates” were developed by “dr. Hill Norris” from Birmingham. The plates were covered with a solution of arabic gum or with gelatine. Afterwards the plates were dryed and packed.

1858:   “John Pouncy”(1820-1894) made the first “carbon print”. As solvent for the pigment he used gum and hot gelatine.

1864:   Silvernitrate was added to the emulsion of collodium, that contained cadmium bromide, to create a photosensitive emulsion more based on silver bromide than on silver iodide. The silver bromide was in the emulsion in a floating condition. This process, invented by Poitevin, was applied by “Walter Bently Woodbury”(1834-1885) for his “woodburytype” and by “Joseph Wilson Swann”(1828-1914) for his “carbonprintprocess”.

1871:   Invention of the “dry gelatine plate” by the English doctor Richard Lee Maddox (1816-1902).

1873:   “Hermann Wilhelm Vogel”(1834-1898), a German professor in photochemistry in Berlin, discovered the process to make collodium emulsion plates photosensitive for colours by treating the plates with specific aniline paints. The first step to "colour photography" was made.

1888:   Creation of the first “roll-film” and the belonging camera, the “Kodak”.

 

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