What is "ghost image"

n. 1 (context photography English) any undesired image appearing at the image plane of an optical system; either a false image of the desired object, or an out-of-focus image of a bright source of light in the field of the optical system 2 (context computing English) a copy of all the contents of a hard drive, used as a backup

Ghost image may refer to:

• Ghosting (television), a television signal problem resulting in an offset replica of a transmitted image in an analogue broadcast
• Screen burn-in or image persistence
• Afterimage, an optical illusion of an image continuing to appear in one's vision after the exposure has ceased
• Motion blur, the apparent streaking of rapidly moving objects in a still image
• An image of a ghost
  • Spirit photography, an attempt to capture an image of a ghost