Main article: Photo sharing
Many people upload their photographs to social networking websites and other websites, in order to share them with a particular group or with the general public. Those interested in legal precision may explicitly release them to the public domain or under a free content license. Some sites, including Wikimedia Commons, are punctilious about licenses and only accept pictures with clear information about permitted use.
Photography
Photography
Photographic" redirects here. For other uses, see Photography (disambiguation).
“Photography (derived from the Greek photos- for "light" and -graphos for "drawing") is the art, science, and practice of creating durable images by recording light or other electromagnetic radiation, either chemically by means of a light-sensitive material such as photographic film, or electronically by means of an image sensor.[1] Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed exposure. The result in an electronic image sensor is an electrical charge at each pixel, which is electronically processed and stored in a digital image file for subsequent display or processing.
The result in a photographic emulsion is an invisible latent image, which is later chemically developed into a visible image, either negative or positive depending on the purpose of the photographic material and the method of processing. A negative image on film is traditionally used to photographically create a positive image on a paper base, known as a print, either by using an enlarger or by contact printing.
Photography has many uses for business, science, manufacturing (e.g. photo lithography , art, recreational purposes, and mass communication.
Etymology
On 1834, in Campinas, Brazil, Hercules Florence, a French painter and inventor, wrote in his diary the word "photographie" to describe his process.As far as can be ascertained, it was Sir John Herschel in a lecture before the Royal Society of London, on March 14, 1839 who made the word "photography" known to the world. But in an article published on February 25 of the same year in a German newspaper called the Vossische Zeitung, Johann von Maedler, a Berlin astronomer, had used the word photography already.
The word photography derives from the Greek φωτός (phōtos), genitive of φῶς (phōs), "light"[4] and γραφή (graphé) "representation by means of lines" or "drawing",[5] together meaning "drawing with light".
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