On Sat, 9 Mar 2002, [EMAIL PROTECTED] wrote:
> In general, stereophography works best over a fairly limited
> range of distances -- too far away and the effect is subtle
> enough that it may not be worthwhile.  But what if one moved the
> lenses farther apart than normal eye spacing?  

Aerial stereoscopic photography uses large spaces between the photos to 
give this sort of illusion.  It's ges since I did any work with them, but 
we used to use them for observing large scale geological formations, 
places to put dams, etc.

In this method, the plane moves at a constant velocity taking photos at a 
constant rate.  You need a special viewer to look at them, however.

They're very effective at conveying the illusion that you're 10,000 feet 
up.

dave
-- 
dave o'brien - http://www.diaspoir.net
Nothing happens.
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