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Message: [QUOTE="Carnac, post: 4352010, member: 5798"] [B]Yes.[/B] As with several of his more famous productions, producer [URL='https://en.wikipedia.org/wiki/William_Castle']William Castle[/URL] used a gimmick to promote [I]13 Ghosts[/I], as [B]audience members were given the choice to see the ghosts in [URL='https://en.wikipedia.org/wiki/3D_projection']3D[/URL]. [/B]In theaters, most scenes were in [URL='https://en.wikipedia.org/wiki/Black-and-white']black-and-white[/URL], but scenes involving ghosts were shown in a process dubbed "Illusion-O". The filmed elements of the actors and the sets—everything except the ghosts—had a blue filter applied to the footage, while the ghost elements had a red filter and were superimposed over the frame.[URL='https://en.wikipedia.org/wiki/13_Ghosts#cite_note-4'][4][/URL] Audiences received viewing glasses with red and blue [URL='https://en.wikipedia.org/wiki/Cellophane']cellophane[/URL] filters. Unlike with early 3D glasses having one eye red and the other cyan or blue, the Illusion-O device required viewers to look through a single color with both eyes. Looking through the red filter intensified the images of the ghosts, while the blue filter "removed" them.[URL='https://en.wikipedia.org/wiki/13_Ghosts#cite_note-5'][5][/URL] Television and home video releases are edited to simulate the effect without the need for special glasses. I was still looking for "ghosts" with my 3-D glasses around my house for a week after watching this movie. :eek: How many times did you sleep the the light on after watching a scary late night horror movie on TV when you were 5-9 years old? [/QUOTE]

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