My research in computer graphics is concerned with capturing, simulating, manipulating, and physically realizing how light interacts with its environment. In effect, I strive to understand why things look the way they do, how we can simulate their interaction with light efficiently, how we can intuitively author or edit that appearance, and how we can create physical objects with control over their appearance. My work in these areas has been incorporated into production rendering systems and has been used in the making of feature films, including Disney's Tangled, Frozen, and Big Hero 6. In 2013, I received the Eurographics Young Researcher Award and in 2019 the NSF CAREER Award.