Re: Cardboard cutouts and backdrops...

[P3D Gregory J. Wageman <gjw@xxxxxxxxxx>]

John R. elaborated:

>The usual suspects - motion (as was just discussed),

Hmm, I'm not sure I'd call this a (physiological) "cue" exactly.  To me
it seems more of a psychological expectation based on experience.  But
it's certainly something to get "used to".

>accommodation (focus) coupled with convergence in a manner consistent
>with natural vision,

Is this really a cue that one must "learn to decouple"?  The fact that
a stereo slide is planar while disparity is preserved produces the effect,
but the implication of "learning to decouple" these is that one couldn't
succesfully view a stereo slide in a viewer until then.

I think rather than "learning to decouple" what you are really saying
is that, over time, we become familiar with the *forced* decoupling of
vergence and accomodation, the lack of expected motion, etc.  If so, I
agree. :-)

	-Greg W.


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