Cianotipia

Cianotipia.
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Cyanotype is an old and simple monochrome photographic copying procedure, after the Calotype. It receives this name due to the bluish (cyan) tone that the copy acquires.

The process uses two chemicals: ammonia iron citrate and potassium ferrocyanide. Its mixture results in a photosensitive aqueous solution, which is used to coat a material (usually paper). A positive image is produced by exposing it to an ultraviolet light source (such as sunlight) with a negative. The result is a water insoluble substance, blue in color (ferrous ferricyanide) known as Prussian blue or Turquoise.

I pay homage to this beautiful discovery of alchemy and the study of color and printing through a series of postcards. With a sober but romantic typeface and with a petty cash to gain space in reading and make the most of the composition space.

Thank you
Barthes.