Orb Zone Theory

Though the number of mega pixels is irrelevant in the Orb Zone theory, the physical size of the sensor chip is not. More recent cameras tend to have larger sensors as well as more mega pixels. This means their lenses have a smaller depth of field which reduces the likelihood of orbs.

The vast majority of orbs are white or shades of grey. Orbs sometimes appear truncated around the edges of frames in some photos (caused by vignetting as the dust is very close to the lens) How orbs can appear in front of backgrounds too close to be in focus (because they are very close & out of focus themselves, not in focus objects 'out there') How orbs can appear to be moving (they are multiple overlapping orbs caused by objects with several highlights, like insects).  How orbs can have tails, usually fading away downwards (because they are falling raindrops) Why orbs are never larger than around one tenth of the size of the photo frame Why cameras that produce odd-shaped orbs, such as diamonds, always get the same shape in all orbs

Some people claim to have tracked individual orbs moving between photos taken in rapid succession & so have concluded that they are moving very quickly. One obvious difficulty here is, how do they know it is the same orb in both photos? Most orbs are featureless amorphous grey or white circles. Even if one could prove that the sane orb appears in two successive photos, it doesn't mean they are moving fast. The orb could indeed be caused by exactly the same bit of dust. However, it only needs to move a very short distance slowly in the orb zone, which is very small & close to the camera, to appear to move a long way in the photo.