Movies are all about entertainment and technology which enhances the experience. Initially, films were black and white with no sound. The musical score was played in the cinema hall while the film was being screened. The movie was shot using one camera — largely a fixed angle. The perspective was limited. Then came the talkies. The background score was added. Later the colour and animation films came on the scene. There are large scale sets on huge studio floors. The real world was recreated. The capability of movie cameras was enhanced. They were put on rigs, cranes to give a totally new feel to shots. There were tele-photo lenses which enhanced the depth of the field.