Paranormal Activity 3 uses camerawork, editing techniques, mise-en-scene, and sound design to build tension and create a scary atmosphere for the audience. Static cameras are used to show surrounding areas where characters may be dragged or pulled from frame to frame. Fast-paced editing with short clips keeps tensions high. Candlelight, mysterious props, and carefully designed sets contribute to an unsettling feel. Non-diegetic music and sounds are employed alongside dialogue to gradually increase a sense of dread in viewers. These filmmaking elements work together to craft a trailer that builds hype by teasing scare without revealing too much of the plot.