31/07/2025
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The history of photography began with the discovery of two important principles: the first was the projection of an opaque image by the camera, and the second was the discovery that some substances are visibly changed by exposure to light[2]. There are no artifacts or descriptions indicating any attempts to take photographs with light-sensitive materials before the 18th century.
View from a window by Le Gras, 1826 or 1827, is believed to be the earliest surviving camera photograph. [1] Original (left) and color reproduction (right).
Around 1717, Johann Heinrich Schulz used a light-sensitive slurry to take photographs of cut-out letters on a bottle. He did not, however, attempt to make these results permanent. Around 1800, Thomas Wedgwood made the first reliably documented, albeit unsuccessful, attempt to take a permanent photograph with a camera. His experiments produced detailed photographs, but Wedgwood and his collaborator Humphry Davy could not find a way to fix these images. In 1826, Nicephore Niépce was the first to fix an image that had been captured with a camera, but this required at least eight hours or even days of exposure to the camera, and the initial results were very crude. Niépce's collaborator Louis Daguerre began developing the daguerreotype process, the first publicly announced and commercially viable photographic process. The daguerreotype required only a few minutes of exposure to the camera, and produced clear, finely detailed results. On August 2, 1839, Daguerre demonstrated the process at the Chamber of Peers in Paris. The technical details were revealed at a meeting of the Academy of Sciences and the Academy of Fine Arts at the Institute Palace on August 19. (To give the public the right to the discovery, Daguerre and Niépce were awarded generous annuities for life.)[3][4][5] When the metal-based daguerreotype process was officially demonstrated to the public, the competing methods of paper-based calotype negatives and salt-based priation
Alh of Photography 💕🥰✍️🤲🕋🕋
Two Important Principles of Discovery