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That is, polarized sunglass lenses that change tint with changing light. They are called some other things as well, but I'm mainly after info on Smith's offerings.
Anyone using Smith's polarchromic lenses?
Are they really worth the cost?
Any other less expensive "auto tinting" lenses out there that actually work?
Anyone using Smith's polarchromic lenses?
Are they really worth the cost?
Any other less expensive "auto tinting" lenses out there that actually work?