NikonGear'23

Gear Talk => What the Nerds Do => Topic started by: richardHaw on May 30, 2021, 12:52:32

Title: bleaching radioactive nikkors
Post by: richardHaw on May 30, 2021, 12:52:32
https://richardhaw.com/2021/05/30/repair-bleaching-radiated-lenses/

this is how i bleached my 35/1.4N, i think I will call it "Michael Jackson" from now :o :o :o
Title: Re: bleaching radioactive nikkors
Post by: Roland Vink on May 31, 2021, 00:30:37
Oh, that's Bad! :)
Title: Re: bleaching radioactive nikkors
Post by: richardHaw on May 31, 2021, 00:35:09
it's his best album, i think ::)

looks like nikon doesnt use thorium that much? :o :o :o
Title: Re: bleaching radioactive nikkors
Post by: Roland Vink on May 31, 2021, 00:51:48
I read there are low levels of radioactivity from the AI 200/4 micro and maybe a few others, but not enough to cause any discoloration of the glass.
The Nikkor-N 35/1.4 was the pinnacle of lens development when it was announced - a very fast wide-angle lens, with multicoating, close range correction, and special glass for controlling aberrations. Just a bit too special in this case :o :)
When the K version came out they were able to substitute different glass with similar properties and no radioactivity.
Title: Re: bleaching radioactive nikkors
Post by: David H. Hartman on May 31, 2021, 01:39:15
All this work to get rid of what you'd pay $50.00 to $120.00 for a Moose Peterson Warming CPL filter.  :D

Dave