Every videographer has two goals when lighting their video: First, to illuminate the action onscreen. And second, to not draw attention to itself. When you light your video like a professional, the light is so subtle and smooth it becomes a natural extension of the scene. Even when you're creating high-contrast dramatic lighting effects, the audience will be willing accept it as "real" if you do it right. Above all, you don't want to pull them out of the story because of jarring lighting. If that happens, your viewers will spend more time wondering about the stagehand off-screen handling the lamp than watching your film.