Taking out of focuss pictures

[P3D Peter Homer <P.J.Homer@xxxxxxxxxxxxxxxxx>]

The posting on the list about the possibility of reconstructing out of
focuss images by digital means reminded me of an article I read some time
ago about reconstucting a sharp image from an unfocussed one by normal
photographic or rather holographic means. The unfocussed negative was used
to make a hologram which is a lensles unfocussed diffraction image anyway
and then the hologram was photographed to get a sharp photograph which
could be viewed in ordinary lighting. This final photo was of course 2D but
what interested me was (and this is where it gets relative to photo-3d) was
the intermediate hologram 3D or 2D (holograms are not always 3D) if it was
3D what was the seperation would it be limited by the diameter of the
single lens used to take the original or would it depend on the degree to
which it was out of focuss as with some other SL3D systems such as the one
using red green filters like  the Q-dos . This would seem to be a way to
make a camera that could take holographic or at least stereo pictures
without the use of a laser in the initial taking just in the later lab
development and even display the end result holographicaly which can
already be done without a laser.
                             P.J.Homer



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