Re: Parallel vs. crossed viewing

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Mon, 23 Jun 97
>From: P3D  Miss Momi Lomilomi  asks:
>
>Is it just me, or is it easier to view parallel views than 
>crossed-eye views?
>
>I've been checking out some stereo books i found cheap at Borders this
>week...most of the views are parallel, but some are crossed.  I CANNOT
>get the crossed ones!!!  Sometimes I almost get them, but then 
>they're backwards; ie, near is far....which i think means i'm still
>viewing in parallel mode?
>
>Any tips for crossed-eye viewing?
>

*****  I started exactly the same way. Crossed viewing was difficult to do
and was hard to keep if I managed to get there. It felt funny and even
stressful.

What made the difference was deciding I was tired of tiny parallel images. I
began trying crossed viewing frequently but not forcefully. Use the finger
method, where you focus on your finger until the images in the background
merge. Keep looking at your finger till you can see that it is *in* the
image area itself and can look at the scene and back to your finger.

The trick in the beginning is to teach your eyes which direction to correct
when the image goes out of correct merging alignment. Since you can parallel
view, your instincts send your eyes the other direction. Be patient and let
them learn slowly. It won't take a long time and when you do start cross
viewing easily you will be well rewarded. Once the reflex action needed to
maintain that mode develops, it stops feeling strange or difficult and
becomes something you like doing.

One other thing, remember to back far enough away from the images being
viewed so that the amount of crossing that you need to do is minimized and
you can view comfortably. 

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/
http://3dzine.simplenet.com/


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