HGH EXPLAINED PHOTOS PAGE 3
Cropped from above photo:
If you look to the upper right portion of this photo you will notice a small light streak that could be mistaken as a spirit orb in motion or another form of paranormal phenomena. However, this is not the case as explained below.
It all hinges on a basic concept of space called point of view and vanishing point, the lines in the ceiling help show off this concept. You basically have a vanishing point at the flash center in the pic that radiates out illustrated by the red lines. The curvature of the lens in the camera correlates with the vanishing point, which is why "orbs" fall in line perfectly with linear perspective vanishing lines/points. Reflective surfaces can cause numerous glitches/anomalies to appear in photos, so always be aware of your surroundings when taking photos on investigations.