Caravaggio Used Photography?

Michelangelo Merisi da Caravaggio was an Italian artist at the turn of the 17th century who ushered in baroque painting and true realism. According to an Italian art scholar, he may also have been an early practitioner of photography, using firefly powder to produce short-lived fluorescent images that he could then turn into a sketch and, ultimately, a painting. He was known for working directly on canvas and not developing a series of preparatory sketches.