Do you lie awake at night wondering how big the world’s largest contact print is? Wonder no more. It turns out Branco Ottico, an Italian photography group, created the largest contact print in the world during Phototrace Florence in September 2015. The project involved a 24 square meter (about 258 square feet) photo negative stitched onto an equally large sheet of canvas, and enlisted the help of strangers who placed their hands on the print for the nearly 13-minute exposure.
Their efforts resulted in a successful – and massive – cyanotype print. According to the group’s website, the print now holds a Guinness World Record. The whole process has been documented in the newly published video below. Additional photos of the project are available on the group’s Instagram.