Greg Ward has been a computer graphics researcher since 1985, and is the principal author of the Radiance rendering system. His research includes global illumination, reflectance models, high dynamic range image capture and display, general image processing, and human perception. He is the recipient of the 2007 ACM SIGGRAPH Computer Graphics Achievement Award, the 2012 International Building Performance Association Achievement Award, and the 2018 Daylight Award for Daylight Research. He is currently employed by Dolby Laboratories, and consulting for Irystec and the Lawrence Berkeley National Laboratory.