The following photo captured an image of a woman peaking from behind a door that was not there. This is refered to as ghost photography.
Below is a very good example of a mist. You can usually photograph this type of energy field forms near active deposits or spiritual aura. This photo was sent it from one of our readers.
The next picture shows the dark figure of a women sitting in a chair. This is usually refered to as shadow people.
PHOENIX ARIZONA PARANORMAL SOCIETY (PAPS)
The next photo shows what is believed to be the beginning of a manifestation. If we stayed long enough the entire figure of the lady would probably develop.