T3D Re: TECH-3D digest 327

["John N. Dukes" <Zytel-Radak@xxxxxxxxxxxxxxxx>]

John et al,

A friend of mine once had one of these, for which he paid a small fortune. 
I was singularly unimpressed with the view thru. There was a lot of
vignetting, and appreciable distortion.  I made a comparison with it and a
Kodak viewer into which I mounted 35mm Bausch and Lomb Hastings triplets (I
think you've seen it). And while I cannot be trusted to be objective, of
course, I much preferred my own handiwork. I got my lenses from magnifiers
that I bought from VW&R---they were the pocket kind with the cover that
pivots to cover up both ends of the lens.

John Dukes

>   1) T3D The realist macro? viewer
>       by john bercovitz <bercov@xxxxxxxxxxx>
> 
> ----------------------------------------------------------------------
> 
> Date: Wed, 1 Jul 1998 09:10:41 -0700
> From: john bercovitz <bercov@xxxxxxxxxxx>
> To: tech-3d@xxxxxxxxxxxxxxxxx
> Subject: T3D The realist macro? viewer
> Message-ID: <199807011610.JAA15021@xxxxxxxxxxx>
> 
> Can someone remind me where that illustration is that 
> shows the Realist viewer with a focal length of 35 mm?
> It seems to me it used a standard 43 mm cemented doublet 
> but that there was an additional "helper" lens of some 
> sort between it and the transparency.  Anyhow, the 
> illustration clearly showed the lenses.
> 
> The lens designer we worked up some specs for at his 
> request back in, what, March?, flaked out but there is
> a new fellow who may be interested in designing a lens
> for us, though I'm not going to push him because it's 
> such a lot to ask.  I want to show the guy the illustration 
> to give him an idea.  It would be great if we could convert 
> our viewers with the addition of a lens.  
> 
> Has anyone looked through one of these viewers?  Is the 
> image quality good?
> 
> Thanks,
> John B
> 
> 
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> 
> End of TECH-3D Digest 327
> *************************


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End of TECH-3D Digest 328
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