More to explore:
ARTH 491 - Shadows and Renaissance Art - Art & Art History - UVa Research Portal at UVa Library
Michelangelo Merisi da Caravaggio The Calling of Saint Matthew (1599–1600). Contarelli Chapel, San Luigi dei Francesi, Rome. The beam of light, which enters the picture from the direction of a real window, expresses in the blink of an eye the conversion of St Matthew, the hinge on which his destiny will turn, with no flying angels, parting clouds or other artifacts.