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P3D Re: stereo to vectograph?
- From: abram klooswyk <abram.klooswyk@xxxxxx>
- Subject: P3D Re: stereo to vectograph?
- Date: Fri, 11 Sep 1998 01:21:50 +0200
Michael A Amundson P3d 2962 08 Sep 1998) wrote:
>(...) the 1860s, a set of stereos were made of an Iowa town creating a
>panorama of stereo images. My question, could these be converted to
>vectograph or anaglyph, then lined up side by side, to produce a true
>stereo panorama?
As others explained, of course all is possible.
I would strongly recommand first to try the Over-Under system.
The first to propose this system is (to my knowledge) van Albada,
almost 100 years ago. (I would be happy to hear of erlier occurences).
Vectography is not cheap, it is Expensive.
Anaglyphs require careful selection of dyes and than still give retinal
rivalry. The best anaglyph technique has low contrast, which is
artistically questionable, especially for old photographs.
Remember that mounting all right hand views together and then all left
views must be done before the Vectograph or anaglyph is made, unless
you use digital techniques and monitor viewing, or printing after
digital processing, again not cheap.
For the over-under system any photographic shop around the corner can
do the printing, a stereographer near you would love to do the mounting.
Like Vectographs and anaplyphs the over-under system requires glasses,
the glasses with left and right prisms (prismbase up and down) can be
bought, though they probably are more expensive than the other glasses.
Alternatively, there are commercially available mirror viewing systems
which can be used for over-under.
A serious disadvantages of over-under is the fact that it requires some
skill to find the right viewing distance.
But then, think of the possibilities!
Enlarge all pictures to poster size, mount left and right panorama one
above the other, and set some mirror- or prismatitic viewers at the
fixed right distances. Great for a historical exhibition.
Smaller printed, as a large horizontal banner it could hang anywhere.
Remember that one and the same commercially available pair of
prism glasses works for all sizes, only at different distances.
Abram Klooswyk
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