[W&B] What is it ? redux

[Christopher Wright]

Hello Steve:

Seems like there is a confusion as to which lens we are talking 
about.  I was responding to Milan's picture of the large lens on a 
table outdoors, not to your camera and lens question.
Serves me for jumping into a discussion without first reading the 
miles of emails beforehand.
Sorry for the confusion.
(BTW: Your camera looks to me like a kind of "mouse trap" a la 
Talbot, for making Calotype negatives.)

Christopher Wright




  .  At 5:31 PM -0400 6/7/07, SBShohet at aol.com wrote:
>Hello Bernard and Christopher,
>
>Bernard, I think your idea is the most reasonable so far.  There are 
>indeed interior threads inside the slightly extended lips at both 
>ends of the lens tube. (these look like filter threads on 
>conventional lenses, though they might be there to receive the 
>'collets' which hold the glasses in place). There are certainly no 
>Jamin or Darlot marks anywhere.
>
>Christopher, I'm still a bit unclear of how a Centralizateur worked 
>or was arranged, but I can tell you that the optics here were not 
>particularly fast like a Petzvel. The glass diameter is about 30 mm. 
>which with the stated focal length of 175 mm. translates to a speed 
>of just a bit better than F 6. 
>
>The mystery continues.  Steve
>
>
>**************************************
>See what's free at http://www.aol.com.
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