Danish cinema dates back to 1897 and since the 1980s has maintained a steady stream of productions due largely to funding by the state-supported Danish Film Institute. There have been three big internationally important waves of Danish cinema: erotic melodrama of the silent era; the increasingly explicit sex films of the 1960s and 1970s; and lastly, the Dogme 95 movement of the late 1990s, where directors often used hand-held cameras to dynamic effect in a conscious reaction against big-budget studios. Danish films have been noted for their realism, religious and moral themes, sexual frankness and technical innovation. The Danish filmmaker Carl Th. Dreyer (1889–1968) is considered one of the greatest directors of early cinema.