1838 - Louis-Jacques-Mande' Daguerre takes the first photograph of a person
1840 - In new york, US dentist Alexander S Walcott opens the worlds first portrait studio.
1854 - The photographic, Carte de Visite is invented in Paris and leads to a massive rise in the number of portrait studios.
1863 - Julia Margaret Cameron earns her reputation closely framed portraits of artists, writers and other notable figures of the day.
1930s - Angus McBean revolutionizes celebrity portrait photography, using elaborate backrounds and lighting.
2002 - Yousuf Karsh, one of the worlds greatest portrait photographers, dies aged 93.
2009 - In the UK, Jane Bown notches up 60 years as portrait photographer for the observer newspaper, with a portfolio ranging from Bertrand Russell to Bjork.
Louis Daguerre (Louis Jacques Mande Daguerre) was born near Paris, France on November 18, 1789. A professional scene painter for the opera with an interest in lighting effects, Daguerre began experimenting with the effects of light upon translucent paintings in the 1820s.
Louis Daguerre regularly used a camera obscura as an aid to painting in perspective, and this led him think about ways to keep the image still. In 1826, he discovered the work of Joseph Niepce, and in 1829 began a partnership with him.
He formed a partnership with Joseph Niepce to improve upon the photography process Niepce had invented. Niepce, who died in 1833, produced the first photographic image, however, Niepce's photographs quickly faded.
After several years of experimentation, Louis Daguerre developed a more convenient and effective method of photography, naming it after himself - the daguerreotype.
According to writer Robert Leggat,"Louis Daguerre made an important discovery by accident. In 1835, he put an exposed plate in his chemical cupboard, and some days later found, to his surprise, that the latent image had developed. Daguerre eventually concluded that this was due to the presence of mercury vapour from a broken thermometer. This important discovery that a latent image could be developed made it possible to reduce the exposure time from some eight hours to thirty minutes.
Julia Margaret Cameron
Photographic portrait of an Italian man, possibly an artist's model called Alessandro Colorossi, by Julia Margaret Cameron (1815-1879). Cameron's photographic portraits are considered among the finest in the early history of photography. She set up a private studio at her Isle of Wight home at the age of 48, after her daughter gave her a camera, and she became expert at using the collodion wet-plate process. This is the only photograph in which Cameron made use of a professional model.
Yousuf Karsh
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