Archived posting to the Leica Users Group, 2007/11/08
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Why not go and ask the charming lady at the beauty salon to keep the lens in the UV room for a while I'd try that if I thought it would do it any good. Phil...x Leonard Taupier wrote: > Thanks Chris > I stopped using the window sill. I've been putting the lens in the > sun when it's bright, but most of the time I've been using a BLB > blacklight bulb. It's only UVA. I don't know which wavelength is most > effective. I could buy a UVB suntan lamp but I won't spend the money. > If what I'm doing doesn't work I'll just continue to shoot b&w with > the lens and be very happy. > > Len > > > On Nov 8, 2007, at 11:16 AM, Chris Saganich wrote: > >> I believe low-E glass coatings suppress infrared, either way those >> coatings don't do much for UV. The UV you would need to reverse the >> coloration would be quite a bit more then found on a windowsill. >> About one month continuous 24/7 exposure would do the trick. Best >> to get a UV lamp and a tinfoil lined box. >> >> >> Chris Saganich, Sr. Physicist >> Weill Medical College of Cornell University >> New York Presbyterian Hospital >> chs2018@med.cornell.edu >> Ph. 212.746.6964 >> Fax. 212.746.4800 >> Office A-0049 >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >