Ключевые слова: adults, assembly, audience, auditorium, blue, blue lighting, business, business event, camera, collaboration, communication, conference, corporate, crowd, culture, digital camera, discussion, education, engaged, event, focus, formal, indoor, information, keynote, learning, lecture, media, meeting, men, networking, photo, photographer, presentation, professional, professional event, public speaking, recording, seminar, speaker, stage, teamwork, technology, training, tripod, woman, workshop,