Fact is, cameras have been lying ever since photography was invented. In the 1870s, scammers convinced the gullible (early on, that was nearly everyone) that they could photograph unseen spirits of the dead alongside the living. There were several ways to pull this off, including using double exposures. The first exposure was done ahead of time with an accomplice in an old wedding dress or military uniform; the second exposure was of the victim... I mean client. When printed, the photo had the living person reunited with the long-lost one (well, actually a vague impression of him or her -- typically, the face wasn't clear).