Popular Photographic Print Processes: Cyanotypes
general use: after 1880-1910s
Johnston seated at a desk in her studio/office.
Between 1890 and 1900.
cyanotype process uses light sensitive
iron salts instead of silver on paper. The
prints are characterized by their
blue color, and are sometimes called
blueprints. In photography, this
low-cost, simple process was often
used for making proofs instead of
finished prints. The color
can be chemically altered, but this
is relatively rare. The images
may fade when exposed to light, but
some damage may be reversed by storing
the image in the dark.
Further information and examples
Print Processes Introduction and Table