As front projection and bluescreen effects became more widespread and less costly, rear projection has been rendered largely obsolete. History[ edit ] Rear projection was conceived long before its actual usage; however, it was only made possible in the s due to three necessary technical developments.
Technique[ edit ] Rear projection effect The actors stand in front of a screen while a projector positioned behind the screen casts a reversed image of the background. A major advance over rear projection is front projectionwhich uses a special screen material to allow the plate to be projected from the front of the screen.
In this case it was used to avoid costly on-location shots in Africa during the opening scenes of the movie, but the effect was also used throughout the film for a variety of shots into or out of the windows of spacecraft.
Shortly after this debut, Farciot Edouart ASC, at Paramount Picturesrefined the technique starting inand developed several new methods, such as syncing three projectors with the same background plate for more even and bright exposure.
This results in a much sharper and more saturated image. The image that is projected can be still or moving, but is always called the plate. Fox Film Corporation was the first to use the rear projection technique, in with their films Liliom and then Just Imagineand were subsequently awarded a technical Oscar for their work the next year.
Judgment Day such as the car escape from the mental hospital and the T hijacking the Police helicopter; he has been described as one of the few people in Hollywood still able to understand and use process photography as an effective technique. This was most noticeable as bumps and jarring motions of the background image that would not be duplicated by the actors.
Harryhausen figured out a way to synchronize the movement of the miniature figures with the background projection as a way to insert live-action humans in the same scene as the creatures.
Quentin Tarantino used the process for the taxi ride sequence of Pulp Fictionand James Cameron used rear projection for several special effects shots within Aliensincluding the crash of the dropship as well as for several important sequences in Terminator 2: This required a large space, as the projector had to be placed some distance from the back of the screen.
In these cases the motion of the backdrop film and foreground actors and props were often different due to the lack of steadicam -like imaging from the moving vehicles used to produce the plate.
The most important was the development of camera and projector motors which could be linked up for synchronization of their shutters, which were developed out of the unrelated needs of "talking" movies whose timing had to be carefully controlled. Alfred Hitchcock used the process successfully to show Cary Grant being attacked by a crop duster plane in North by Northwestbut was criticized when he used it extensively in Marnie.
Finally, the larger film gauges beginning to emerge in the late s demanded more powerful projection lamps, which were subsequently available for making the rear projection screen brighter and thus more properly exposed.
Fantasy filmmaker Ray Harryhausen pioneered a variation of rear projection in the s and s with Dynamationwhere the rearscreen was placed on a miniature set along with stop-motion creatures.
A Space Odyssey that the modern version was fully developed. One might hear the command "Roll plate," to instruct stage crew to begin projecting. These so-called process shots were widely used to film actors as if they were inside a moving vehicle, who were, in reality, in a vehicle mock-up on a soundstage.
Although the technique had been used experimentally for some time, it was during the filming of Frequently the background image would appear faint and washed out compared to the foreground. In the late s, David Rawnsley introduced the technique in four minor British films, when it was heavily criticised.Product Features Your DIY Rear Projection Film Screen is a % PVC, high-tech.
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