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Forums > Back > Old lens amateurs watch our for radioactive lenses
toni-a
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10-28-2016, 10:00 AM
There are many lenses poduced between the 1940s and 70s using thorium oxide up to 30% of the weight, now replaced by calcium fluorite  

here's a list so if you have any of those watch out 

 

 

http://camerapedia.wikia.com/wiki/Radioactive_lenses

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Old lens amateurs watch our for radioactive lenses - by toni-a - 10-28-2016, 10:00 AM

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