βɓʙlue blue for you

a Saturday workshop at CoExist :

creating cyanotype prints using a solution of iron compounds:

it's a recipe introduced by Sir John Herschel in 1842:

distilled water + potassium ferricyanide:

distilled water + ferric ammonium citrate (green):

the two solutions are mixed together in equal parts:

in a daylight free room, coat some paper or

fabric in the solution and leave to dry:

place objects or negatives onto the paper:

expose to sun or uv light:

rinse in water:

or first in white vinegar, then in water to increase the tonal range:

this is a negative I found behind a photo in my Nannie's

photo album:

it's a picture of my Mama aged about one:

I gave her this print for Mothers Day: