Re: [photo-3d] stereo projection length

["John A. Rupkalvis" <stereoscope@xxxxxxxxxxxxx>]

Focus and convergence functions of the human eyes are not normally lilnked,
although they most often are used in a manner that might suggest that.

A common example, some people are able to focus closer than they are able to
converge, and other people are able to converge closer than they are able to
focus.

Converging at different distances than focus does not seem to cause any
problems for most people as long as the images are aligned and parallaxes
are not excessive.

JR
----- Original Message -----
From: "ron labbe" <ron@xxxxxxxxxxxx>
To: "3D photo EGROUP 3D" <photo-3d@xxxxxxxxxxx>
Sent: Friday, October 13, 2000 6:26 AM
Subject: [photo-3d] stereo projection length


> John Rupkalvis writes:
>
> >>In a theoretically perfect stereoscopic slide show or 3-D motion
picture,
> the limit should be determined by the subject material, storyline,
purpose,
> etc., no different than from flat material.<<
>
> John,
>
> I must respectfully disagree on this point.
>
> No matter how perfect a stereo projection is, the audience members must
> disengage their normally linked focus and  convergence mechanisms. For
some
> people, especially those who have done it often, it is not a problem. But
> many neophytes are bound to have negative reactions to varying degrees...
in
> this respect it is quite different from flat films.
>
> Yes?
>
> ron
>
> ron labbe
> studio 3D
>
> mailto:ron@xxxxxxxxxxxx
> http://www.studio3d.com
>
>
>
>
>
>