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apontamentos: Louis Jacques Mandé Daguerre
French Painter of sceneries for public squares and Psysicist who invented the first pratical process of photography, DAGUERREOTYPE: know as daguerreotype- first succesful formo f photography. Though the first permanente photograph from nature was made in 1826/27 by Joseph Niépce.
In 1822 at Paris he opened the diograma, na exhibition of pictorial views with various effects induced by changes in the lighting. Niépce, who since 1814 had been attempting to obtain permanente pictures by the action of sunlight, learned in 1826 of Daguerre effort in the same field. The two became parters although after 4 years Niépce died.
In 1839 he sold his invention to the French government, in return for an annuity of 6,000 francs.
Louis was the sole inventor of the practice photo.
Uma curiosidade- Daguerre was appointed na officer of the Legion of Honour
Photography refers to a form of registering real image without the participation of man. Emerged after several observations and events at different times and was invented from experiments performed since antiquity.
Processo de como se faz fotografia permanente:
Daguerre and Niépce found that if a copper plate coated with silver iodized was exposed to light in a camera, then fumed with Mercury vapour and fixed (made permanente) by a solution of common salt, a permanente image would be formed. A great number of daguerreotypes, especially portraits, were made in the mid 19th century. The technique was supplanted by the wet collodion process. It was of poor quality and required about 8 hours exposure time, the process developed required only 30 min.