Making Cyanotypes

I tried making cyanotypes for the first time with paper I bought from an online photography store- not the best quality but I bought a big pack so I could experiment before perhaps buying better stuff. I had some acetates of the lenses printed ready so that I could make this this holiday and have some work when I get back to uni. I really like the idea of including the sun in the medium, so that there are levels of meaning, and the materials and process are fitting with my intentions and interests. It seems to me really poetic to make images using light, and of objects that once helped someone to see. It is as if the light reactivates the now obsolete and 'dead' lens.

The process was fun - and very easy! I need to do more experimentation with timings to figure out the right colour blue: I wanted to wait for the sun but made do with a cloudy day and wasn't entirely sure what length of exposure I would need for this. Oddly, I left one of these images outside for 0 minutes, and another outside for 20 and they have come out the same colour. I also would like to try different acetate images as I think maybe I might have made the acetates too dark so on the cyanotypes (such as the one above) there is not much detail to be made out. Overall, i really like the effect -I think they have potential to be taken further; I'd love to make a really big version, with that rich blue filling most of the page.