Why Ghosts Get 'Spooked' by HD Cameras

paranormal-activity-02
A still from Paranormal Activity 3.
(Image credit: Paramount Pictures)

"Paranormal Activity 3," the latest in a series of successful low-budget horror films about amateur ghost hunters, opens on Friday (Oct. 21). The first film, released in 2007, was a surprise indie hit around the world.

The films are shot in a "found footage" style, in which the audience is treated to footage supposedly taken in real life from home videos and security cameras. This technique, often involving handheld cameras and actors talking to the camera operator, has been around for years but was widely popularized in the 1999 film "The Blair Witch Project."

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Benjamin Radford
Live Science Contributor
Benjamin Radford is the Bad Science columnist for Live Science. He covers pseudoscience, psychology, urban legends and the science behind "unexplained" or mysterious phenomenon. Ben has a master's degree in education and a bachelor's degree in psychology. He is deputy editor of Skeptical Inquirer science magazine and has written, edited or contributed to more than 20 books, including "Scientific Paranormal Investigation: How to Solve Unexplained Mysteries," "Tracking the Chupacabra: The Vampire Beast in Fact, Fiction, and Folklore" and “Investigating Ghosts: The Scientific Search for Spirits,” out in fall 2017. His website is www.BenjaminRadford.com.