3D pic in Pop Science (was Vertical error & leveled camera MISCONCEPTION!

[P3D Gabriel Jacob <jacob@xxxxxxxxxxxxxx>]

Bob Howard and Dr.T discussed vertical error and the effect of not holding
the camera level. It is true that even holding the camera perpendicular
to the ground so that the camera lens are up and down instead of left and
right will result in no alignment error. I would just like to go in a
different direction in regard to this thread and discuss taking 3d pics in
this way on purpose. If you try to take wide format 3d pics with a narrow
format 3d camera by holding it sideways you'll still end up with narrow
pics since to view them properly, you'll have to mount them with the
horizon running vertically. My question is I don't think it is possible to
reconstruct the 3d information so that we can visualize the vertical depth
but with the horizon in the proper left right orientation. Even if one
tried to view the images with the up-down MagicViewer this would not work.
This is designed to fuse horz parallax. Also I don't know of any animals
(or aliens) that have there eyes in that orientation (up and down vs left
and right). If an animal or humans evolved this way it would be interesting,
since I would imagine our brain would have corrected for the horizon. This
would be similiar to the study that was discussed awhile back with walking
around with the glasses where you see everything upside down. It was
mentioned then, that the brain would rewire itself to see things "normally". 

For those interested in spotting 3d pics that were not intended as such, as
in the recent Sports Illustrated issue. Here is another one that I saw
today in the Dec. issue of Pop Science. Coincidentally this stereo pair has
to be viewed sideways with the horizon running top to bottom. If you go to
page 84 you'll see an ad for Canon's Image Stabilzation video cam
technology. In the ad they show two pics. The top picture shows a man
water-skiing and the effect of image stabilization. The bottom picture
shows the same man but without the image stabilization. When you turn the
magazine sideways and cross-eye view it, you will see it in 3d. Obviously
when they shot this they had two video cams, one one top and another on the
bottom. The 3d effect is quite good, even thou the pictures are slightly
different to `each other because of the image stabilization.

P.S. They have no alignment error. ;-)

Gabriel going to rummage thru his stack of magazines.


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