Greg Downing specializes in image-based 3D technologies and computational photography techniques. His photographic work has been displayed in some of the nations most prestigious museums including the American Museum of Natural History, the Cincinnati Art Museum, the Denver Museum of Nature and Science and the Tech Museum. He has worked on the development of photogrammetry and stitching software at Realviz and in film production as a technical director at Rhythm & Hues and Sony Pictures Imageworks on “Narnia”, “Spiderman 3” and “I am Legend”. He teaches at Gnomon School for Visual Effects and has published professional training DVDs on photogrammetry and panoramic stitching. He has presented at professional conferences for both photographers and visual effects artists.