THE CAMERA OBSCURAThe camera obscura is an optical deviceThat projects an image of its surroundingsonto a screen inside. The image appearsupside down and the camera obscura onlyWorks on a sunny day.The image can be projected onto paper,And then traced to make an accuraterepresentation. Using mirrors as in the 18thcentury you would be able to flip the image so it was the right way up.Another more portable type is a box with an angled mirror projecting ontotracing paper placed on the glass top, the image being upright as viewedfrom the back . The smaller the pinhole the sharper the image gets.
J. NICEPHORE NIEPCE 1826. • A french inventor who was made famous by developing the worlds first photograph in 1825. His son Isidore formed a partnership with Daguerre. From Isidores’s partnership with Daguerre came the Dagurreotype.Nicephore niepce and his first developedpicture.
SIR JOHN HERSHELSir John Hershel1867.John Hershel was an English astronomer who wantedmake copies of his notes. He contributed massively to the world of photography we know to day by creating the firstever cyanotype (blueprint). He discovered sodium thiosulfate to be a solvent of silver halides in 1819, and informed Talbot and Daguerre of his discovery thatthis "hyposulphite of soda" ("hypo") could be used as aphotographic fixer, to "fix" pictures and make thempermanent, after experimentally applying it thus in early 1839. His ground-breaking research on the subject wasread at the Royal Society in London in March 1839 and January 1840.
HENRY FOX TALBOTWilliam Henry Fox Talbot was a British inventor Williamand a photography pioneer who invented Henry FoxThe calotype process. Talbots original Talbot.1864.contributions included the concept of anegative from which many positive prints canbe made even though the first concept ofPositive and negative was created by JohnHershel. Latticed window in Lacock Abbey in 1835 by Talbot is a print from the oldest Photographic negative in existance.