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Discussion in 'Camera Building, Repairs & Modification' started by Mustafa Umut Sarac, Feb 13, 2017.
question as above.
thank you ,
Dear God no.
No modern-day lens designer would design optics using a thorium-doped lens, and any optician would refuse to work with thorium. Cancer and answering to EPA / OSHA (or their European / Asian equivalents) are not worth the perceived benefits.
Don't ever request it of anyone in the optical industry.
There are better performing glass types available today anyhow.