SUPPLEMENTAL INDENTURE Supplemental Indenture (this "Supplemental Indenture"), dated as of April 1, 2004 among IMAX Corporation, a corporation incorporated under the federal laws of Canada (the "Company"), the Guarantors named in the Indenture...Supplemental Indenture • May 6th, 2004 • Imax Corp • Photographic equipment & supplies • New York
