Re: [photo-3d] viewer lens spacing (was Re: medium format viewers)

[RJ Thorpe <thorpe@xxxxxxxx>]

Alan Lewis wrote:
> 
> If one's eye spacing is less than the typical maximum infinity separation on a mounted slide and the viewer lens spacing is set to equal the person's actual eye spacing then they would always be slightly diverging their eyes to fuse the image.

I have wondered for some time whether the interocular adjustment isn't set
for some
distance between one's own eye spacing and the optical center of the slide.
I have
noticed that I only need to set the spacing once for any viewing session
and 
usually this is because someone else has readjusted it. I have never found
that
adjustment makes my viewing more comfortable or helps fuse the images in
any way.
But I have found that adjusting the interoccular will allow me to see both
images
full frame. If the adjustment is off, the inside or outside edges may be
off-
screen.

-- 
Robert Thorpe
Cedar Rapids, Iowa

Mailto:thorpe@skep.com
http://www.skep.com

 

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