CYANOTYPE (n.)
A photographic process in which light does the forgetting.
What is exposed becomes dark. What is held back
becomes the figure β pale, preserved, almost.
See also: blueprint, absence, the shadow that outlives
the object casting it.
Distinguished from other processes by its refusal of grey:
you are the deep Prussian field, or you are the light
that burned through. There is no middle record.
The branching at the top β that is not decoration.
That is the image thinking.