Thank you very much, David. Your and Aram’s explanation to me back then over
that Pentax Super-Takumar 55mm lens that I had seen on eBay cleared up my
questions, then; and the linked article answers questions I didn’t even know I
had about the subject, now. :) Thanks.
Best regards,
Peter S
On Aug 11, 2021, at 1:21 PM, David Young <dsy@xxxxxxxxxxxxx> wrote:
A while back, there was a discussion of lenses yellowed by radioactive
elements in their glass.
(I don't have it with me, on my laptop - sorry.)
For those interested in the subject, a very detailed article has popped up on
Petapixel. More on the subject that most of us will ever want to know.
https://petapixel.com/2021/08/10/radioactive-lenses-and-everything-about-them/
Enjoy!
David.
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