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Re: [OM] Another radioactive Zuiko!

Subject: Re: [OM] Another radioactive Zuiko!
From: Dirk and Carla Wright <wright@xxxxxxxxxxxx>
Date: Thu, 5 Apr 2001 19:57:48 -0400
At 2:23 PM -0700 4/5/01, Gary Reese wrote:
>Windsor C. writes:
>
><< But does it glow in the dark? Inquiring minds want to know. >>
>
>No, the more radioactive 55mm f/1.2 doesn't glow in the dark as we can
>detect with human eyes.  But it can potentially fog film, since this
>lens emits radiation which readily penetrates both the mirror and the
>semi-silvered shutters of OM-2n and OM-4 models.  I'm testing that right
>now.  If it fogs, then the lens does "glow in the dark" as far as film
>is concerned. And its's value in available darkness (low light)
>photography would be questionable, since that is where the use of high
>speeds films is most applicable.
>

Gary, do you think that this radiation reduces image contrast on the film
by fogging it? Can this explain at least part of the performance of these
lenses in your testing?


Be seeing you.

Dirk Wright



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