This is the orb photo I mentioned, Dave.
The photo was taken a couple years ago at my granddaughter Alex's birthday party. I've considered light conditions in the room at the time (not a factor), extraneous objects such as flyaway balloons (none), and contaminants on the camera lens; no other distortions of this spcific kind appeared on any other photos taken that day.When I first saw this photo when we picked up the batch from the developers, my impression wasn't of an unfriendly presence, but of a dance of joy.
My thinking is that one of Alex's beloved late grandmas was in attendance that day.
