P3D Re: RE: P3D VM Virtual Viewer with achromats

[Steve Berezin <sbere@xxxxxxxxxxxxx>]

Eddie Bowers wrote:
> 
> I was actually disappointed in this mod. The image is no where near as large
> as you get with the plastic lens (which I assumed it would be) or with the
> Model D viewer. It is larger than the Model L however. The spacing of the
> lenses is still a problem for me too, but that would take some major viewer
> surgery to correct.
> 
> -Eddie

I made some with shorter FL lenses but some people could not fuse the
images.  I compared the Virtual viewer with the original plastic lenses
which a large amount of people could not view, with the equivalent FL of
achromats, a 44mm fl of achromats and then with the 47mm achromats.  
With the equivalent achromats a few more people could view the slides (I
believe this may be due to defects in the plastic lenses) but nowhere
near the amount that felt the 47mm fl were the easiest to view. The
number of people that felt the 47mm achromats were the best far
outnumbered the other lenses. In fact I have gotten some emails from
people who said they could not view the images with the original version
of the Virtual Viewer and they could with ours.

It seemed that without focussing and interocular adjustment the longer
focal lengths accommodate more viewers. I think this is why the Model L
was chosen and why so many people have trouble with the virtual viewer
as it is currently offered.


The viewer page is at:

http://www.berezin.com/3d/vmviewer.htm



> 
> -----Original Message-----
> From: 3dphoto [mailto:graphlove@xxxxxxx]
> Sent: Friday, January 21, 2000 4:17 AM
> To: Multiple recipients of list PHOTO-3D
> Subject: P3D Re: VM Virtual Viewer with achromats
> 
> About two months ago got my Virtual VM viewer replaced with achromats, this
> change for the better quality lenses made a huge difference when looking at
> both commercial or personal reels. Somehow, I am not using the model D that
> much anymore. This would also be the viewer I would take around when showing
> my pics at work, friends, etc. and leave home the more expensive (and
> heavier!) bakelite model D for private (and safer!) viewing.
> 
> Check Berezin's web page for the alternatives to replace plastic lenses, for
> very sharp achromats. Here is the link:
> 
> www.berezin.com/3d
> 
> Happy viewing!
> 
> Alex
> 
> ____________________________________________________________________
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-- 
mailto:sbere@xxxxxxxxxxxxx
http://www.berezin.com/3d
Steve Berezin
Berezin Stereo Photography Products
21686 Abedul
Mission Viejo, CA 92691
USA