As usual after a pause, back to something 🙂
Simple cyanotypes. Still learning new stuff with the digital post processing. I guess I have understood better how to use the curves now.
Can’t remember the camera I used for the first 3 images. I think this is a 3D printed pinhole, but I can’t be sure. It lacks the usual vignetting of pinhole.
Second picture is printed on sumi-e paper. It works fine with cyanotype and it’s almost like a fabric.
Playing with coffee toning. This is one of my favorite black rendering toner for cyanotype. Here we can see the difference between the standard print, and the toned one. I have experienced few years ago with bleaching first, and will probably get there again. I have seen some formulas using carbonate potassium.
I got some Hahnemühle Sumi E paper some time ago. This is quite interesting to make cyanotype with it. The paper absorb a lot of the solution and is acid free, so this is probably not the best for that. Nevertheless, I got some good result with the first try. I dipped it in coffee for toning, and it basically take ages to get some taint. I will try to bleach it first and see what happen.
A good time spend laying on the lawn under the sun, is perfect when a couple of cyanotypes are exposing.
Here are a couple of cyanotypes photograms made with the new exposure Unit. Oxygen peroxyde is used to add contrast after the wash.
Here we are building a UV exposure unit for the cyanotype process. It is only about the LED pannel. In my case, I have build a furniture which have the box for UV exposure. It is about 25 cm high.
This is what it look like when you’re done
When exposing a cyanotype coated paper, we get a very nice blue after 3 minutes, and solid blue in 4 minutes.
