Strange White Ghost Picture

A possible explanation of the armchair one: They said that the lens was left open for a whole HOUR. If someone sat in the chair for just a few minutes, the lighter (more reflective) parts of their faces and clothes would show up on the film as a "ghost" image.
I agree with people, the 9-foot-tall dude and the baby look fake.
Otherwise, These are some impressive ghost pics. I've had some unexplainable experiences myself, but that's another discussion.