what is a thermal mask are they any different than others?
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Thermal Lenz
#2
Posted 10 September 2009 - 09:16 PM
Some lenzs have a coating on them that is supposed to stop fogging but, IMO, a thermal lenz is one that has two separate lenses that trap air between them- very similar to a double paned thermal window. The trapped air acts as a layer of insulation and this prevents warm damp air inside your mask from condensing on the lenz... a non thermal lenz (just one lenz) will cool quickly... warm damp air condenses on the inside of teh lenz... and you cannot see as it "fogs".
#3
Posted 10 September 2009 - 11:30 PM
dude. go thermal. trust me. dont waste your time with the "fog resistant" lenses. all they "resist" is you seeing clearly. IMO
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