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Originally posted by underduck
reply to post by mtaftm
I am going to go with dust because it is far easy of an explanation than transdimensional being being caught on camera. Although I do not rule out their existence, that is what I see in these photos.edit on 19-3-2012 by underduck because: typo
Digital cameras have lenses with a much greater depth of field than film cameras. This means that the nearest point to the camera that is in focus is a lot closer. It also brings the 'just out of focus' area ('orb zone') closer as well.
The 'orb zone' is so close that it is intensely illuminated by the flash. The intensity of the flash increases according to an inverse square law with decreasing distance.
Indeed, if the subject of your photograph is at a distance of 5m, a particle of dust at 5cm from the camera receives approximately 10,000 times greater light intensity!
This creates an 'orb zone' in digital cameras where the light intensity is sufficient to illuminate the faint out-of-focus bits of dust, which appear as circles of confusion (or 'orbs').
The graph shows flash illumination diminishing with distance (to right).
O = too out of focus to be visible even with flash
Z = (orb zone) out of focus but visible due to high flash intensity
B = out of focus but invisible because flash not intense enough
F = in focus and visible
In a film camera, all the zones move further out and the 'orb zone' generally vanishes because there is insufficient flash intensity at the increased distance.
As digital cameras get larger CCDs (not just megapixels but physically), their lenses get decreasing depth of field. This means that the problems of orbs and strange mists should gradually vanish. No more spoiled pictures!
Originally posted by Malfeitor
reply to post by dayve
I agree; but what if you were to take random pics throughout your house and find orbs? I took eighty four pics, and only what I posted had orbs; will you discount them without first seeing them?
I understand being skeptical, but I do not understand disbelief without proof,