at University of Sydney majoring in Fine Arts and Ancient History, Callas worked as an assistant film editor in the Australian Broadcasting Corporation.
[3] Callas then studied at Sydney College of the Arts majoring in Printmaking and Sculpture[4] and began making video artworks using performance and image processing, after attending a workshop by Douglas Davis[5] and also seeing the work of Peter Campus for the first time.
[6] Callas completed Singing Stone then Our Potential Allies in 1980, based on a book of the same name issued to US troop in Papua New Guinea during WW2.
[7] He has curated a number of video programs including An Eccentric Orbit: Video Art in Australia 1980 - 1994 which included works by Callas, Philip Brophy, Destiny Deacon, John Gillies, Jill Scott and Bill Seaman, and was shown at the Museum of Modern Art,[8] New York and 15 venues in North America, Asia, Europe and Australia.
[11] The retrospective, Peter Callas: The Invisible Histories of the Present, at Millenáris Park, Budapest, 2006, was held across two galleries and showed 20 moving images works simultaneously along with a comprehensive collection of his prints.