Here is an interesting picture: one very large orb, above and over the right shoulder, then a small Spirit Orb near or on the jacket over the chair.
Why are some small and some large? Is the large Spirit Orb an angel, guardian or even loved one? Is the small one a baby Spirit? Intuition tells me that they are levels of energy that the camera sees.
I don't know who owns the jacket. It appears as if there is an energy imprint attached to the jacket. Some sensitive people may feel the energy while near the person or jacket.
Picture taken at ISD Spring Retreat 2008 in Shepherdstown, WV on Memorial Day Weekend.