However, most New Zealand-made films of the period were documentaries. The National Film Unit was a government-funded producer of short films, documentaries, and publicity material. "This is New Zealand", a short film made for the World Expo in 1970, was extremely popular there and subsequently screened in New Zealand cinemas, garnering considerable acclaim. It used three separate projectors to create a wide-screen image. The film was restored in 2006 and shown at the 2007 New Zealand International Film Festivals.