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      1839 
      In 1839, both William 
      Henry Fox Talbot and Daguerre announced their discoveries of photography.  
      The processes discovered by Talbot and
      Daguerre were entirely 
      different. 
      The Daguerreotype 
      photograph, discovered by Daguerre was a delicate single image produced on 
      metal. 
      Talbot discovered the 
      negative/positive process.  
      This enabled multiple photographs to be produced from a single negative.  
      This became the basis for photography over the next 150 years and beyond. 
      
      Brief comments on  
      Talbot's discoveries are given on this web site in the pages on the 
      
      Photogenic Drawing and 
      
      Calotype processes. 
      Please click here to read the
      background to Talbot's 
      discoveries, beginning with his use of a camera obscura to help with 
      his sketching.   
      
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