Schneider Xenar lenses are 4-element tessar-type designs.
I've got two of them kicking around at home, and an old Zeiss Tessar as well.
Lens arrangements look to be identical on them.

-Mat


On Tue, 30 Nov 2004 14:00:06 +0100, Frantisek <[EMAIL PROTECTED]> wrote:
> 
> Tuesday, November 30, 2004, 12:57:17 PM, Collin wrote:
> CB> Tessar designs are very practical because of their excellent
> CB> sharpness over most of the covered area.  They're somewhat better
> CB> than triplet or Xenar designs, especially seen in the corners.
> CB> It's what makes the YashicaMat124 series a really good camera.
> CB> (My Rodenstock Ysarex 135mm 4x5 lens is a Tessar as well.)
> 
> Isn't Xenar a direct Tessar copy?
> 
> I agree that it is definitely worth getting a MF camera with at least a
> Tessar. I had the Yashica with the triplet lens and it was quite worse
> than similar Tessar-equipped ones. Apart from tonality, it didn't
> resolve any more details than 35mm SLR with a good normal lens.
> 
> Good light!
>            fra
> 
>

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