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The first Photograph, Joseph Niépce > 
One hundred and fifty years ago [Summer 1826] Joseph Nicéphore Niépce succeeded in obtaining a camera picture on a polished pewter plate, sensitized with bitumen of Judea. This material has the unusual property of hardening in light (not blackening like silver salts) but its light sensitivity is small. Niépce needed 8-10 h[ours] exposure in sunshine. He named his invention "heliography." After dissolving the unexposed parts of the picture in oil of turpentine and rinsing the plate, there remained, without the need for any other fixing, a permanent bitumen image of the light drawing, the shadows being indicated by the bare pewter plate.
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More on this Website >
• http://www.hrc.utexas.edu/exhi ... permanent/wfp/4.html
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Joseph Niépce, Inventor of Photography
When the craze for the newly invented art of lithography swept France in 1813, it naturally attracted Joseph's attention. Unable to draw well, he placed engravings, made... |
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