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Show Inventors of Photography There have been numerous inventors inven-tors of photographic processes. J. H. Schultz, in 1727, made the first photographic copy of writing. In 1802, Thomas Wedgewood copied pictures by the action of light, Joseph Jos-eph N. Niepce produced the first permanent pictures, in 1814. Louis J. Daguerre, in 1839, made public the details of his daguerreotype process proc-ess of sensitizing a silver plate with iodine and developing with vapors of mercury the image produced on exposure. ex-posure. Niepce's photographs were made on tin, coated with bitumen of Judea; this bitumen, which is soluble in essence of lavender, becomes be-comes insoluble when exposed to light. After 14 years of experiment- ing he was able to fix permanently i the image of the camera on tin. For some years before his death Niepce was in partnership with Daguerre, Da-guerre, and later his son Isadore joined Daguerre in his work. |