Historical Process

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This is from a series of Colodian glass plate negatives I produced while at school. This is a pair of Birch Trees outside the science building at Bennington.
The glass plate was printed as a cyanotype, which is the same type of process architects use to print out blueprints. Although Cyanotypes are usualy far more blue, I toned this image with something I can't remember, but it brought it closer to a brown.