[photo-3d] Hyper and Normal stereo from plane?

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

I received this message from a friend:

>I just read your note re shots from plane window.  
>I just came back from Victoria, B.C.   I was using 2 
>single-use cameras mounted side by side.  I included 
>the plane wing and left about a half-second between 
>shots (shooting left first).  Worked beautifully as 
>the wing is in normal stereo and the landscape including 
>clouds, the rockies and mount baker are all in hyper-stereo.  
>I looks quite natural.

He forwarded a copy of the view and it did not work well
for me.  The wing seemed out of place in the z-dimension.

Can someone explain to me what happens if you superimpose
a normal and a hyperstereo like that?  Where is the normal
stereo positioned?

I think I have tried this myself and I remember it did
not work.

What has worked is movement of clouds while taking a
hyperstereo of Grand Canyon.  It looks as if the clouds
have depth, in addition to the depth in the Canyon.

George Themelis