P3D PePax Challenge

["Dr. George A. Themelis" <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

Let me pose a very specific question:

Suppose that I take a portrait using 135 mm lenses and a stereo
base of 7.5" and view it with a viewer with 45 mm lenses.
I am fairly close to my subject and the portrait is "tight"
(face mainly).

Will I notice anything unsual about the resulting stereo image
or will I be let to believe that I am looking at a close up
of a real person?   What are the deformations that I will see?
Under what conditions?

>Geometrically, the
>stereoslides made with the Super Duplex (base 30 mm) should show
>gigantism, with everything two times enlarged. This is not the case,
>enlargement is hardly noticeable, only a somewhat diminished depth
>effect compared with the normal base.

I do notice a gigantism when I see these pictures (but not twice
enlarged).  Being familiar with the subject can be a problem
(i.e. we know how large people are).  But what happens when we
see an unfamiliar image?

George Themelis


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