I understand you can remove the yellowing of certain rare-earth element glass lenses that have yellowed with age. Like the Konica 57mm/1.2.
Besides the "brightly lit" room method, I understand you can bleach it with prolonged exposure to UV light.
What kind of UV light specifically? Like a UV blacklight? Or the type of UV light you would use to sterilize things?
or
Besides the "brightly lit" room method, I understand you can bleach it with prolonged exposure to UV light.
What kind of UV light specifically? Like a UV blacklight? Or the type of UV light you would use to sterilize things?

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