is Vivitar safe to use......

Started Oct 3, 2013 | Discussions thread
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Elliot H
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is Vivitar safe to use......
Oct 3, 2013

Just found a beautiful  k1000 with a Vivitar Series 1  28mm  F1.9 lens.

After some research, i found that the rear element of the lens is made with Thorium, thus radioactive.

Is this safe to use and will film left in camera for years be safe to handle?

Thanks in advance for any serious information.

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