Similarly, we have the same problem with photos of "orbs," especially from digital cameras. In the images below an experiment was conducted. White flour was placed on my right index finger. With a typical Olympus digital camera with flash, I took a series of rapid-fire photos while simultaneously blowing the flour from my finger out into the field of view.
All of the specks of flour which fall in the BLURFO zone became classic "orbs." Distorted, over-blown, seemingly large, detailed, colorful spheres with the common Orb inner-ring signature. All specks of flour falling outside the BLURFO zone, where the camera could manage to focus, looks just like specks of flour. As they retreat further from the camera into darkness, they become less and less visible. The BLURFO zone "orbs" are clearly distortions produced by a combination of the flash (which over-illuminates the flecks of flour) and the inability of the camera to focus on them in the BLURFO zone.
