Ключевые слова: action, audiovisual, background, black, business, cinema, closeup, conference, copy, demonstration, device, digital, displaying, education, electronic, entertainment, equipment, event, film, home, indoors, lamp, lcd, learning, lecture, lens, lesson, meeting, modern, movie, multimedia, object, office, presentation, professional, projection, projector, school, show, slide, space, study, system, table, technology, text, theater, video, visual, wooden,