FORENSIC PHOTO

• Simple glass lenses


  1200s
• Leonardo da Vinci discovered multicolored nature of white light


  1472
• J.C. Sturn invented portable camera obscura with reflex mirror and focusing lens


  1676
• Sir Isaac Newton published Optiks and corpuscular theory of light


  1704
• J.H Schulze experimented light sensitivity of silver salts, contact images on liquid mixtures of chalk and silver nitrate in a bottle


  1725
• John Dolland invented achromatic lens


  1758
• Sir John F.W Herschel discovered infrared radiation


  1800s
• T. Wedgewood and H. Davy discovered that copying of silhouettes is sensitized with silver nitrate


  1800s
• J.W Ritter discovered blackening of silver chloride by ultraviolet radiation


  1801
• Sir David Brewster invented the optical system of the future parlor stereoscope


  1815-1820
• J. Nicéphore Niépce discovered that camera photographs on paper or sensitized with silver chloride


  1816
• Sir John F.W Herschel discovered thiosulfates and the solution of silver halides by hypo


  1819
• J. Nicéphore Niépce discovered copying of engravings on glass, zinc and pewter


  1822-1825
• Gaspar Felix Tournachon took the first known aerial photograph of the french village of Petit-Becetre


  1858
• Maxwell and Sutton successfully make color separation negatives

  1861
• First recorded use of RGB color separation negatives to reproduce a color image by Ralph Evans


  1961
• Dr. Hermann Wilhelm Vogel discovered dye-sensitizing technology


  1873
• the Lumiere brothers patented the autochrome color photography plates


  1904
• the Lumiere brothers produced autochrome color photography plates

  1907
• in Colorado, USA, intoxicated persons were being photographed by the police department and the use of photographic speed recorders to detect speeders were approved


  1907
• Kodak dominated the amateur market

  1910
• Siegrist and Fischer produced color images by chemically forming dyes


  1912
• In Chicago, the International Association for Identification was formed. It has evolved into the oldest and largest forensic science organization in the world


  1915
• In Ohio, USA, a motion picture was ruled as inadmissible

  1916
• In Ohio, USA, photographs of x-rays were not admissible

  1928
• the flash bulb was invented

  1930
• In New Hampshire, USA, the ultraviolet photograph of footprints in blood where upheld as admissible in court


  1934
• In the United States the microfilm of a document was admitted in place of the document


  1938
• Kodak introduced the Super-Six-20 camera which featured an automatic exposure capability


  1938
• Kodak introduced the Kodacolor color negative film


  1941
• Kodak introduced the Ektachrome color slide film


  1942
• Kodak introduced the Ektacolor color negative film


  1947
• Edwin land invented the Polaroid Land Camera


  1947
• The Polaroid black and white print film was invented


  1948
• The United States FBI Laboratory split its photographic operations unit into a Processing Unit and a Special Photographic Unit


  1942
• The Videotape recorder was introduced

  1957
• the Super 8mm movie equipment was introduced and replaced with video camcorders


  1965
• Fully automatic electronic flash units became available for still photography


  1965
• Simple glass lenses


  1200s
• Leonardo da Vinci discovered multicolored nature of white light


  1472