P3D Re: ortho realist viewer

[Alan Lewis <3-d@xxxxxxxx>]

Greg E. writes:
> David White did produce a viewer that was nearly
> ortho, using 3 element lenses AFAIR but George T. or
> someone reported the lenses aren't great (edge sharpness
> or coverage?) in spite of the lack of stretch.

Also, I have been fooling around with "nearer" ortho 39mm f.l. Realist
format viewer lenses in my 35mm full frame viewer.  I am doing it more
for the fun with experimentation rather than a high end optical
offering, but the results are really quite good.  I added a third
achromat pair of lenses to my full frame viewer (so triple achromats per
eye!).  
One of my goals is to maintain a full Realist format image view through
the viewer, and I think I attained that.

When you start using nearer ortho viewer lenses in the Realist format
you will need to be ready for the grain to become more apparent.  But
that's good, it will challenge you to take even better quality images.
-- 
Alan Lewis  
mailto:3-d@xxxxxxxx
http://members.home.net/3-d
Home of Weekend Stereo Projects 
New stereo viewers & Stereo Wedding Photography


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