P3D Re: Hugo de Wijs VM viewer, Re: Normal interocular spacing?

[abram klooswyk <abram.klooswyk@xxxxxx>]

I wrote (PHOTO-3D Digest 3222, 02 Mar 1999):
>(The picture should be kept in the focal plane, for people with 
>normal - or corrected to normal - eyes, this can be done by moving
>the lenses as close as possible to the pictures, while keeping 
>vision sharp)

This is in error (wrongly changed from a different formulation), it
should of course be:
... moving the lenses as _far_ as possible from the pictures, while 
keeping vision sharp.

Paul Talbot wrote:
>What size lens is required to realize a usable diameter of 15mm?

That will depend first on focal length and (horizontal) format of the 
pictures. But also on lens design (single or multiple), and then on
the spectator, for the distance from the eye to the stereoscope
lenses varies (wearing glasses or not, anatomy of orbit).
This is a question for Tech-3D where the optical experts maybe could
answer.

Abram Klooswyk


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