Re: report on Freeviewer's Assistant

[P3D Dr. George A. Themelis <fj834@xxxxxxxxxxxxxxxxxxxxx>]

Thanks Emil for the report!

>comes with a plastic box case.

Mine came in a handsome wooden case.  The benefits of getting SN No. 2! :-)

>The first four people I showed this viewer to were able to see a Keystone
>stereo card image and some Loreo prints with less than a minute of initial
>effort.  None of the four had much practice with seeing stereo pictures.
>
>This looks like a perfect tool for viewing stereo pictures in my albums
>without removing them from their plastic sheets, and I'm pretty pleased!

I believe this is a great tool for viewing 3d in the web too.  Switching
from the right to the left eye lets you cross-view!

>Dr. T. mentioned a keystoning effect when viewing images with greater
>horizontal separation, but I haven't been able to test this yet.

Here is what I said (in my original review):

"Alan touches on two issues of interest to theoreticians :):  Isn't the
magnification larger in the unaided eye because of the shorter light path? 
Isn't there keystoning present due to use of mirrors?  The answer is YES to
both questions but the effects are negligible from a practical point of
view.  They both might be more noticeable the closer you get to the image
but they are not a problem at normal viewing distances (at the stop
location of the pivoting mirror)."

I have not seen any keystoning and the test is not wider separation but
how close you come to the image (by adjusting the pivoting mirror).

George Themelis


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