Chromakey has been used in film and cinema production as a tool to mix two or more images together in all aspects of the art. It is increasingly used in digital photography to cut and paste a subject onto a background.The Green 6' x 9' Chromakey Collapsible has crease resistant fabric, is fast to set up and dismantle, can be used inside or outside, collapses to a third of its original size and is made of certified fire proof fabric