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I get lots of questions about polarized sunglasseshow are they made, what exactly do they do, glass vs. plastic, what color lens should I pick, and do expensive ones really offer an advantage?  And why can't I get clear polarized sunglasses for low light?  My guest, Renato Cappuccitti [41:51], is an expert on polarized sunglasses and will answer your questions and mine about one of the most essential pieces of gear.
 
In the Fly Box this week we have some thoughtful and interesting questions and comments, including: