[rollei_list] Re: Spinning front taking lens and postings
- From: Jerry Lehrer <jerryleh@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Thu, 29 Dec 2005 12:57:40 -0800
Eric and Richard,
I never said that it was a Goerz Hypergon. I picked up this bubble-
like lens from a GI returning from WW2, in 1945. Among the
goodies I got from him besides this lens was a few Walther pistols.
When I took the lens to my High School Photography instructor,
he thought for a while that it was a Radiometer, but then saw the
pneumatic tube and bulb that made the "star" spin. If our member
Les Clark was in the Bx. H S of Science Camera Club in 1946,
he probably saw it when I brought it in to show.
I have read descriptions of this lens many years ago. Kingslake
spoke of it at a symposium over 50 years ago.
Jerry
Eric Goldstein wrote:
> Jerry Lehrer wrote:
>
> > Eric,
> >
> > Nope, the one I have, has the "star" INSIDE the near spherical lens.
> > Richard could possibly confirm that, if he remembers seeing it here.
> >
> > It was an internal component.
> >
> > Jerry
>
> Then it is not a Hypergon:
>
> http://www.cliveruss.com/classiclns/hypergon150/hypergon.html
>
> http://www.cosmonet.org/camera/hyperg_e.htm
>
> The whole point of the external star on this lens was so that it could
> be swung into place part way through the exposure to compensate for
> light fall off away from the center. I'm not sure how an internal
> mechanical filter would work...
>
> Eric Goldstein
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