Re: relation between squash and separation

[T3D John Ohrt <johrt@xxxxxxx>]

Grant Campos wrote:
> If I take a stereo pair with 200mm lenses and want to look at them in a
> red button viewer.  Can I increase the stereo-base when I take the picture
> to counteract the squash effect?  I looked through past archives but wasn't
> finding the answer to this particular question.

Whoops, a missing spec.  I have to go find it now.  From memory, the
difference between the camera focal length and the projector/viewer
focal length should be less than 20%.

Now this could be related to fatigue or eye strain, but maybe it does
unsquash the image.  I don't know.

Please help here people.

I'm not sure if that would unsquash the image, but there is a simple way
to find out.  If you manage to borrow etc. two virtually identical 200mm
telephotos and take an stereo pair with one, then the two lens can be
temporarily made into a viewer.

If you try it, please let us know.

Regards,
John


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