PHOTOMICROGRAPHS OF DUFAYCOLOR RESEAU. Magnification Xioo Linear. (i) Base dyed blue, then (2) Blue bleached out. overprinted with greasy resist in lines. … (3) Dyed green. (4) First resist washed off and reprinted in lines at right angles to the first set. moved to give final reseau. the These photomicrographs were taken on Dufaycolor Film, reproductions being made from the transparencies.
Color photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
