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The first photograph is considered to be an image produced in 1826 by [[Nicéphore Niepce]] on a polished pewter plate covered with a petroleum derivative called bitumen of Judea. It was produced with a camera, and required an eight hour exposure in bright sunshine ! In 1839 Jacques Daguerre developed a process using silver on a copper plate called the Daguerreotype. It is somehow similar to instant photography as it is the exposed material that is handed over to the user, after processing. Almost at the same time, William Fox Talbot developed a different process called the calotype?, using paper sheets covered with silver chloride. This process is much closer to the photographic process in use nowadays, as it produces a negative image that can be reused to produce several positive prints. |
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The first photograph is considered to be an image produced in 1826 by [Nicéphore Niepce]? on a polished pewter plate covered with a petroleum derivative called bitumen of Judea. It was produced with a camera, and required an eight hour exposure in bright sunshine! In 1839 Jacques Daguerre developed a process using silver on a copper plate called the Daguerreotype. It is somehow similar to instant photography as it is the exposed material that is handed over to the user, after processing. Almost at the same time, William Fox Talbot developed a different process called the calotype?, using paper sheets covered with silver chloride. This process is much closer to the photographic process in use nowadays, as it produces a negative image that can be reused to produce several positive prints. |
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At the time, the Daguerreotype proved more popular as it responded to the demand for portraiture emerging from the middle classes in midst of the industrial revolution. In fact, this demand for portraits, that could not be met in volume and in cost by oil painting, may well have been the push for the development of photography. Neither of the techniques involved, the camera obscura, and the photo sensitivity of silver salts, were 19th century discoveries. Camera obscura were used by artists in the 16th century, as an aid to sketches for paintings, and the photo-sensitivity of a silver nitrate solution was observed by Johann Schultze in 1724. |
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At the time, the Daguerreotype proved more popular as it responded to the demand for portraiture emerging from the middle classes in midst of the Industrial Revolution. In fact, this demand for portraits, that could not be met in volume and in cost by oil painting, may well have been the push for the development of photography. Neither of the techniques involved, the camera obscura, and the photo sensitivity of silver salts, were 19th century discoveries. Camera obscura were used by artists in the 16th century, as an aid to sketches for paintings, and the photo-sensitivity of a silver nitrate solution was observed by Johann Schultze in 1724. |
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Photographic products 1) Cameras 2) Films 3) Polaroid cameras |
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