Re: [photo-3d] Re: stereoopticon lenses

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

>I don't know that I have seen through the acromatics before.  I have a
>Keystone "stereobinocular" that came with a Tour of the World card set, would
>that have them?  

No.

>When I say the plastic ones work fine for me, I mean that
>they allow me to see my stereocards without double vision or 
>excessive strain and my friends can use them without difficulty.

Yes, that's important.  Obviously you don't want a viewer
that hurts your eyes or gives you a headache.  But most
viewers will allow you to see the stereo images without
eye strain.  As you become more experienced with stereo
viewing, you will start to appreciate subtle differences
and viewers/lenses which at first appeared "slightly better"
if any, they will be much better.

>I also have a red button realist viewer, would that have achromats?

YES!

George Themelis