Cyanotypes is a camera less process which makes a blue print photograph. Anna atkins was a botanist alive in the 19th century. She was the first person to explore and experiment with cyanotypes. Engineers used this well into the both century as a cheap process. This process involves 2 chemicals; ammonium iron(III) citrate and potassium ferricyanide.
These are my cyanotypes i did on a sunny day outside, we used objects and waited. One of mine wasn't as clear that was because i moved it while it was in the sun however i tried again without moving it.