Re: PHOTO-3D digest 1369

[P3D Neil Harrington <nharrington@xxxxxxxxxxxxx>]

Allan Woods writes:

>3-D perception is a complex illusion, not soleley composed of two
>distinct but unnatural images viewed by each eye.

Very true.

>Flat cartoons rely on relative motion of planes of depth to create the
>3-D illusion (another clue) yet things need to be moving in order for
>that element to be perceived.

An even better example of this principle is in the film TRUE LIES, near the
end, in which the camera circles over the young girl on the girder high
above the expressway.  Even without any "true" (in the sense of binocular)
3-D, the sensation of depth is terrifying.  And it is due almost entirely to
the constantly moving camera, which supplies the necessary visual
information for the brain to separate foreground from background by the
relative motion of both. 

Comparable shots in other films, in which the camera is stationary, do not
produce anything like this sense of real depth.



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