Horror films use codes and conventions to convey meaning and elicit fear in viewers. Some key elements that define the genre include isolated settings, villains, victims, blood, death, violence, and supernatural elements like ghosts or monsters. Successful horror films create a sense of equilibrium initially, but introduce elements of disequilibrium through the villain that disrupt this balance and cause fear. Camera techniques like zooms and handheld shots, as well as editing techniques that speed up cuts during intense scenes, enhance the viewing experience of horror films. Soundtracks and sound effects are also important for setting mood and immersing viewers in the story.