Eastman (1854-1932) turned from banking to photography, producing a succesful roll film in 1884, and the 'Kodak' box camera in 1888. He formed the Eastman Kodak Company in 1892 and produced the Brownie camera in 1900. Though he made breakthroughs in technology, and particularly in mas-production, his greatest contribution to the popularisation of photography was a marketing idea. By offering a total package of camera, film and procesing, Eastman eliminated at a stroke all the fus and aggravation that had formerly been asociated with photography.
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