It is really nothing to freak out about. These energies are around us all the time at different intervals. It is sometimes affected by your mood.
Or, sometimes they are from a spirit guide or angel. These energies are only seen in photos because of them having (high) or faster vibrations, than let's say, a solid object. The camera shutter is still not fast enough to get clear pics of fae or others all the time. They really have pretty faces and such, you just cannot recognize that, unless you can raise your vibrations high enough to meet their standard, then they look solid like us, see? Confused now? My email address is modelmajik@yahoo.com if you have any more questions.