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**[email protected]** · February 19th 11, 02:10 AM posted to rec.photo.equipment.large-format

On 2/18/2011 5:15 PM, Donn Cave wrote:
Quoth (Thor Lancelot Simon):
...
| On the other hand, maybe it's not "uncharacteristic". Wollensak made
| some awful Tessar lenses and so did a few others. Maybe Richard knows:
| is there something about the Tessar design that makes is particularly
| prone to manufacturing or Q/C error?

I believe one way to make a Tessar awful is to use it for LF
applications that require a larger circle than it really delivers.

The xenar I am talking about looks bad on 6X9. A 135mm tessar should
easily cover that sharply when stopped down. This one won't.

Stephey