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Color pictures was explored beginning within the 1840s. Early experiments in color required extraordinarily long exposures and could not “repair” the photograph to prevent the color from shortly fading when uncovered to white mild. In the March 1851 problem of The Chemist, Frederick Scott Archer revealed his wet plate collodion course of. It grew to become the most extensively used photographic medium until the gelatin dry plate, introduced in the 1870s, ultimately replaced it. There…