T3D Re: T3D Re: T3D Convergence as a depth clue

[bercov@xxxxxxxxxxx (John Bercovitz)]

Larry Haines writes:
 
> Many years ago when several people were doing a lot of close-up work, I
> remember Feeling like an ant looking at the pictures.  The objects
> looked very large.  The stereo base was generally less than 65mm.

Yup, that'll do it.  If the taking lens matches the viewing lens, then
the size of the reconstructed object goes inversely with the stereobase.
So if the camera's stereobase is half of your personal stereobase (the 
distance between your eyes), then the reconstruction will be twice normal
size.  Of course this is only the reconstruction, your brain will do
further processing on it and try to fit it with known models and this 
will temper the effect.

John B


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