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Why does Depth of Field mean
35mm cameras capture less orbs?
Orbs caught on 35mm camera
are a controversial subject. Some people believe
that evidence of 35mm camera orbs means that they are
paranormal or somehow disproves the 'digital theorem'
taking orbs paranormal after all.
We already know that orbs on
35mm cameras are perfectly possible, and were
photographed in the early 20th century. The real
question is why are orbs so common when using digital
cameras and very uncommon when using 35mm cameras?
The Difference Between
Digital and 35mm Cameras
There are many differences
between these types of cameras, but what we're really
interested in is the size.
Digitals cameras, or at
least those for home use, are designed to be small - the
smaller the better from the manufacturers perspective.
35mm cameras are size limited because they have to
incorporate the physical 'film'. The camera needed
to be a minimum size to physically accommodate the 35
film.
Digital cameras, however,
replaced the physical film with a digital CCD (Charge
Couple Device) chip. Many compact camera CCD chips
are less than half the size of the old physical film.
To maintain the same picture quality with the smaller
frame size, lenses had to have a better resolution. One
consequence of this design change was a much bigger
depth of field
This shaper lens greatly
increased the generic Depth of Field of digital cameras
when compared to 35mm cameras.
What does this mean to orbs?
Imagine what a shallower
depth of field would look like. Remember our old
diagram:
That triangle shape (with
the top cut off) defines our Orb Zone - where we can
photograph orbs. Imagine that whole triangle was
shifted a couple of centremetres to the right.
The area where dust is
'invisible' becomes much bigger. The area of
overlap with the flash hardly exists anymore! Thus when
using 35mm an 'Orb Zone' often does not exist. A
small Orb Zone is only created under very unusual
circumstances of greatly enhanced Depth of Field.
In summary, it is not the
digital technology that produces orbs. What
created widespread orbs was the enhanced Depth of Field
that marks digital cameras.
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