Re: Slide-bar 3D Dr. T ( digest 1583)

[P3D Bob Howard <bobh@xxxxxxxxxxxxxxxxxxxx>]

RE: Dr.t discusses using his SLT for stereo. With a single camera this
is done with slide bar (or a cute parallalogram device one sold for
TLRs). George outlines a number of subject possiblilities.

 I myself think they truly have to be still-lifes or table top setups.
Outdoors is not good if you are critical. I say this because I had a
Leitz employee take pictures of Wetzlar and the Leitz plant and area in
stereo with a tripod and slide bar device. He did a magnificent job for
me and had perfect exposure, but the mounted slides are diaappointing
because:
  1)scintillation of tree leaves because stereo image doesn't match as
leaf turned and changed reflection with breeze.
  2) Funny light patches as cloud cover shiften and sun and shade moved
between exposures.
  3}While careful to avoid people or moving vehiclee and other objects,
there are enough anomolies in the images to spoil the stereos which were
of course something I wasnted for historical interest. This might be ok
in a So. Cal. desert with clear sky and no wind hi hi! BobH


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