Oh that blue!
This past weekend I took a very interesting class on cyanotype. A local photographer, Nan Wollman, taught the class and I really learned so much. I never really understood what this process was all about and now I do!
Basically you mix specific chemicals, brush them on paper, and after they are dry you put your image or objects on top of the paper and set it outside in the sun under glass. Then you rinse the chemicals off and voila! Beautiful image!
I was the only person who brought plants. The others in the class brought "negatives" that they created by taking a photo, turning it into black and white and then printing it out on a laser printer on acetate. Then the acetate is placed on the treated paper and set in the sun. The black acts as a mask and remains blue or cyan and the white stays white. It is truly fascinating. I never knew that blue prints were the original cyanotype!
And after many years of being a graphic designer, I now understand what the C in CMYK really means! (Cyan, Magenta, Yellow and Black)