1) Various camera shots are used in the opening sequence to create meaning and set the tone. Extreme close-ups on a character's face emphasize their emotions of fear, while establishing shots introduce the isolated, gloomy setting.
2) Close-ups focus on a character's expressions of terror as they experience something paranormal, setting up the supernatural elements. Medium shots show characters discussing strange events and long shots portray ghosts in the background.
3) High and low camera angles are employed to make characters seem vulnerable, tracking shots build tension as something seems to be following victims, and cuts between shots increase suspense. The pace and use of diegetic and non-diegetic sounds also create an ominous atmosphere.