Conference scene, ACM symposium, auditorium, rows of chairs, lectern, projector screen, professional attendees, laptops, tablets, notes, pens, suits, ties, blazers, glasses, diverse ethnicity, facial expressions, engaged listeners, presenter speaking, slides, diagrams, equations, code snippets, parallelism concept, algorithms illustrations, architecture designs, modern interior design, wooden panels, carpeted floor, subtle lighting, panoramic view, 3/4 composition.