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thorium glass

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Threads Tagged with thorium glass
  Thread / Thread Starter Last Post Replies Views Forum
Super Takumar 50mm f/1.4 Lens M42 Questions (Multi-page thread, 3 pages total 1 2 3)
JollyGreen
08-20-2020 07:10 AM
by UncleVanya Go to last post
347,704 Pentax SLR Lens Discussion
So should I bleach my 50s (Multi-page thread, 2 pages total 1 2)
GUB
01-06-2020 03:26 AM
by WorksAsIntended Go to last post
253,193 Pentax SLR Lens Discussion
Yellowed Thorium Glass Lens FIX- Cheap (under $20US), Fast EASY (Multi-page thread, 3 pages total 1 2 3)
steamloco76
12-27-2019 03:39 PM
by tvdtvdtvd Go to last post
346,844 Repairs and Warranty Service
Help reversing thorium oxide on my lens. (Multi-page thread, 4 pages total 1 2 3 ... Last Page)
Prince Harbinger
07-12-2018 12:47 PM
by stevebrot Go to last post
497,535 Troubleshooting and Beginner Help
SMC-M 50mm 1.7: Thorium?
moorerice
08-30-2014 11:49 AM
by moorerice Go to last post
45,083 Pentax SLR Lens Discussion
The Thorium glass Q from way back
condor27596
04-21-2014 03:28 PM
by lytrytyr Go to last post
101,716 Pentax SLR Lens Discussion

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