Cheap sketch book paper light sensitized with tumric. Sun sketched on some acetate with a sharpie. Exposed to light for about two and a half weeks at the end of grey and wet British summer. Image fixed with Borax to prevent further development.
Anthotypes are an often overlooked photographic process invented by Sir William Herschel in 1842.
Paper is made light sensitive by using an emulsion made from crushed flower petals or any other light-sensitive plant, fruit or vegetable. Once dried the image is exposed to sunlight bleaching out an image. Most anthotypes are un fixed-able and will therefore change throughout time with further exposure to light.
Due to the lack of chemicals being used this method is environmentally friendly photographic process.