Back in October last year, I picked up some "Solarprint" paper from an educational supply house that was having a sale. For some weeks I thought about what to do with it, and eventually decided that the usual path of making contact prints or photograms with it was a bit too dull, and that I would build a camera and take photos with it. Now I am by no means the first person to do this - although the idea of producing cyanotype camera negatives is surprisingly recent. As far as I can tell, the first person to do it was photographer, John Beaver, in 1999 - over 150 years after the development of the chemistry ! More recently, blogger Nag on the Lake published a how-to for cardboard cameras in 2019. Meanwhile, Ray Christopher has been experimenting with using cyanotype paper as a medium-format negative. The cyanotype process chemistry is rather unusual in that is not particularly sensitive to visible light. It is most sensitive to UVA down to the visible spectrum. One of the s
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