cinerama
Not only does it use three proctors that are syncronized together(A Sel-sync device was used)and the projectors had specially designed 3 phase motors run from the Sel-Sync unit.The projectionist had to "cue" and frame each 1 hr reel during thread-ups.The other thing that was unusual about Cinerama was the curved "Strip" screen-the screen was actually made up from many "Strips" of screen fabric hung like vertical venation blinds. In some theaters an annoucer or the theater manager would literally "walk thru" the screen to announce the movie and the experience the audience was about to encounter.these screens are still available-custom-and for a price.only a couple the theaters are still equipped to run Cinerama-and no more prints for it are made.Sad-I remember watching "How The West Was Won" in Cinerama in a theater near Wash DC.They had the announcer who walked thru the screen.Century made the special projectors for Cinerama.Many of these were "Recycled" to run standard 35MM film prints.the soundtrack was Magnetic-that explained the unusual high sound quality of these shows.Long before Dolby and DTS.
Not only does it use three proctors that are syncronized together(A Sel-sync device was used)and the projectors had specially designed 3 phase motors run from the Sel-Sync unit.The projectionist had to "cue" and frame each 1 hr reel during thread-ups.The other thing that was unusual about Cinerama was the curved "Strip" screen-the screen was actually made up from many "Strips" of screen fabric hung like vertical venation blinds. In some theaters an annoucer or the theater manager would literally "walk thru" the screen to announce the movie and the experience the audience was about to encounter.these screens are still available-custom-and for a price.only a couple the theaters are still equipped to run Cinerama-and no more prints for it are made.Sad-I remember watching "How The West Was Won" in Cinerama in a theater near Wash DC.They had the announcer who walked thru the screen.Century made the special projectors for Cinerama.Many of these were "Recycled" to run standard 35MM film prints.the soundtrack was Magnetic-that explained the unusual high sound quality of these shows.Long before Dolby and DTS.