In search of simple 3D formulas

[P3D Gregg Lobdell 234-0884 <gml@xxxxxxxxxxxxxxxxx>]

Novice 3D photographer in search of simple rules of thumb for solo SLR rail 3D
photography.

Given that closest object is distance X and furthest object is distance Y (often
infinity) and if appropriate, main subject is distance Z, what is the
appropriate separation, left to right, for the two images.  Perhaps another way
to express this is that for a subject at distance Z, the appropriate separation
left-subject-right is angle A.

I would expect that for close-up 3D the separation would be less than the
inter-occular distance, and for distant objects it would be greater.  But can
this be quantified in a simple way.

I searched the FTP site and didn't find what I was looking for.  I understand
that to vary the taking image separation may vary the 3D effect.  

Gregg Lobdell                             Voice: 206-234-0884
Boeing Commercial Airplane Group            Fax: 206-234-5775
Seattle, WA, USA                       InterNet: gml@xxxxxxxxxxxxxxxxx


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