Archived posting to the Leica Users Group, 2000/01/23

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Subject: [Leica] Radioactivity
From: Mike Johnston <michaeljohnston@ameritech.net>
Date: Mon, 24 Jan 2000 00:20:04 +0000
 
>>>Wouldn't a radioactive element in a lens cause film fog?  Seems
strange
that
it should be purposely built in...<<<


The earliest Super-Takumars for the Spotmatic had a radioactive element.
Roger Hicks says that if you let it sit for a while on a sheet of
Polaroid and then pull the Polaroid, you can see a faint shadow. I've
never tried it.

- --Mike