In recent years, moviegoers have come to expect special effects and 3-D creatures that are increasingly fantastic and realistic. This is thanks to digital technology, which allows such things as dinosaurs and tornados to be shown on the big screen. But now directors are using computers in less obvious ways... to alter simple street scenes, or to avoid going on location at all. This is a trend that concerns those who earn their living from the millions spent by movie makers going on location. From Los Angeles, Virginia Biggar reports.
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