Originally Posted by
ShannonM
That works, but it can only get rid of so much. I did the window thing, and Photokid has done the hard UV thing. From what he says, it works, but only so well, and only for so long. Sometimes, they're too far gone.
S'ok... they're great in b&w, which is most of what I shoot.
--Shannon
I've never heard of anyone not being able to restore a Thorium lens. Sometimes the yellowing is from other reasons, possibly even the cement used between lens elements. Those case can be an issue for sure. Once restored you have to try and avoid leaving it in the dark all the time or it will revert back.
Fortunately for me it's not really and issue since I no longer bother with film. Easy fix with digital in post processing. Still, I want it "right" so I'm cooking 'er.
