Jim,
You might be able to shorten the treatment time if you happen to know
someone working at a tanning salon.
Charlie
On Mon, Mar 20, 2017 at 4:25 PM, Jim Nichols <jhnichols@xxxxxxxxxxxxx>
wrote:
> My slightly radioactive Pentax Super-Multi-Coated Takumar 50/1.4 is
> undergoing a sunshine treatment in hopes of reducing the slight
> discoloration of the 3 rear elements. The recommended exposure is about a
> week, but may get extended because of bad weather days. You may note that
> this photo was taken with with a Takumar 55/1.8, which also has
> Thoriumdioxide glass, but is not discolored enough to notice.
>
> http://www.gallery.leica-users.org/v/OldNick/20170320-P3205865.JPG.html
>
> Comments and critiques welcomed and appreciated.
>
> --
> Jim Nichols
> Tullahoma, TN USA
>
> --
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