At 9:07 AM -0700 4/5/01, Mark Marr-Lyon wrote:
>Hi all,
>
>After Gary Reese emailed me with the results that my Zuiko 55/1.2 was
>radioactive, I decided to test an early (and pretty ugly) silver-nose Zuiko
>50/1.4 I have which has a yellow appearance similar to the 55/1.2. It is
>also radioactive! Gary found that radioactivity was emitted from both the
>front and rear of the 55/1.2, while the 50/1.4 is strongly active from the
>front, but not as active from the rear. This suggests that a) the
>radioactivity is attenuated by the other elements, and b) the 55/1.2 has
>more
>than one rare-earth element, while the 50/1.4 only has one, probably the
>front element.
>
So this is an indication that both of these lenses have rare earth glass
elements? I assume this either adds to thier value or at least thier worth
in our eyes?
Be seeing you.
Dirk Wright
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