Cyanotypes are a type of camera-less photography. The process was invented by Hershel in 1842 and used first by Anna Atkins for botanical illustration in the 1840s. The plant material is placed on the coated paper and put in the sun, once exposed it is washed and produces a white image on blue background. Other colours and textures can be created by experimenting, for example in these images of mine, with turmeric, washing liquid or vinegar. It is a hit and miss process but fascinating and a great activity for sunny days in lockdown!