Archived posting to the Leica Users Group, 2011/04/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]It worked for my Ektar as well clear as well glass Simon jessurun Amsterdam On Wed, Apr 20, 2011 at 10:30 PM, Herbert Kanner <kanner op acm.org> wrote: > Thanks for the kind word, George. Byron Rakitzis suggested that my > speculation as to the cause of the yellow was probably incorrect, and > suggested a Google search. I found a lot of information indicating that the > yellow was due to radiation damage from gamma rays emitted by some of the > daughter products of the decayed thorium. No information as to why a few > hours application of UV cures this. > > Herb > > >> On Apr 19, 2011, at 12:23 PM, Herbert Kanner wrote: >> >> ?> So now I concluded that the balsam was fine, and that this lens >> had at least one thorium glass element. I headed to Ikea, where I >> had never been before. I felt like a lab rat in a maze; everyone >> should have that experience ONCE. By some miracle I found a desk >> version of that lamp $9.89, assembly required! I applied the >> recommended twelve hours of exposure, and the yellow is gone gone >> gone. >> >> >> Kudos! Herbert. >> and thanks for the detailed and useful information. >> >> Regards, >> George Lottermoser >> george op imagist.com >> http://www.imagist.com >> http://www.imagist.com/blog >> http://www.linkedin.com/in/imagist >> >> >> >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > -- > Herbert Kanner > kanner op acm.org > 650-326-8204 > > Do not meddle in the affairs of cats, > for they are subtle and will pee > on your computer! > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >