Hey
I just got back from Gettysburg and I wanted to share a few of my brother's thoughts.
First of all, my brother is a professional photographer. That is, for a living he takes pictures and has won awards for his photographs and has had his photos appear in books, Japanese magazines, major newspapers, and etc. So he knows a thing about cameras.
Second of all, my brother believes in ghosts. In fact when he goes to Civil War cities, he stays at haunted hotels from the period and asks to stay in the "most haunted" rooms.
So my brother the professional photographer who believes in ghosts recently told me the following on our trip to Gettysburg:
1) Orbs are natural phenomenon. In fact my brother showed me how he could recreate "orbs" and other strange light images. Basically anything from dust specs on the lens to mist to falling sugar/salt grains to a light hitting the lens itself or a flying bug can reflect light from a flash or other light source and appear to be orbs or other unusual lights.
2) You never heard about orbs before strong bulb flash photography.
3) The camera only picks up light that is visible to the human eye. That should be a tip off if you need a camera with a light source at night to observe it - because you need to add the dimension of the cameras falibilities.
4) Ruining the atmosphere of a battlefield with constant flashes interupting the peace of the night is disrespectful to the soldiers who died there.
Just his opinions that he shared with me last week, I for the most part agree with him.