[LargeFormat] List serve house keeping

[Les Newcomer]

Clive,

I've been on this list long enough to have completely forgotton how to
do anythign but talk!
I'm going to be changing my email address soon and don't want to lose
you or have my dead mail ricochet around the listserve. How do I change
my email address?

(yes I thought of doing this off line, but I figure it's been sometime
since this stuff was talked about and maybe others need to know too.


Les Newcomer
Clive Warren wrote:
> 
> At 9:14 am +0000 19/11/01, philip Lambert wrote:
> snip
> >
> >Thorium is easily detectable with a 'beta' counter.  I work in a nuclear
> >power plant and made the mistake of taking a 'newer' 35 F2.0 leica summicron
> >into the power block last winter.  Everything coming out of the power block
> >is scanned for radiation and the assumption is if it is radioactive it was
> >dosed in the power block.  It almost went to a rad waste dump.  However with
> >a lot of work I was able to convince them the radioactivity was fixed and a
> >product of manufacture (some articles from the Leica historical magazine
> >helped).
> snip
> >
> >The lens illustrations were missing from my email; did anybody get them
> >intact? If you want an informal test put the lens overnight on a sheet of
> >5x4 film in a light-tight black plastic wrapper. If on development the film
> >has been fogged by the lens there is probably a good case for investigating
> >its radioactivity level. In the meantime don't carry it in your pocket. I
> >did think it was lanthanum glass that was radioactive.  My luminous watch is
> >said to be radioactive.  Does it matter?
> >Philip
> 
> Hello Philip,
> 
> Thanks for all the additional information.
> 
> Can imagine that you were fairly highly motivated to convince the
> people at the power plant that your Leica lens deserved a better fate
> than the toxic waste dump.
> 
> If you are referring to the Aero Ektar photos that I posted to the
> f32.net forum then they are here:
> http://www.f32.net/cgi-local/discus/show.cgi?6/128
> 
> The lens has a focusing helicoid which  I believe is rather unusual
> as many of these lenses were installed on fixed focus (infinity)
> aerial cameras.
> 
> I'm not too worried about the radiation but it would be good to know
> the real levels. Luckily it is far too big to put in a pocket :-)
> Thanks for the test suggestion - if my curiosity is aroused enough I
> may try that out on one cold Winters evening.
> 
> Cheers,
>         Clive
> 
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