White empty signboard on the building. blank mock-up of an outdoor info banner. big blank signboard with copy space for text message or content in center of city. modern street with tall skyscrapers, driving cars and walking crowd pedestrians. octane render, trending on artstation, highly detailed, lighting, professional, realistic, sharp focus, 4k, 8k, high resolution, candid, personal, –testp, bright lighting, ultra-detailed, bright lighting, photo, high quality photo, cinematic shot, volumetric light, imax