Hi All,planning my trip to Chamonix this summer.Will be doing some classic easier routes involving glacier tracel, and hope to do the 3 monts ascent of MB. My question is -do I need cat 4 glasses ?- or can i get away with cat 3. I have looked at the photo chromatic lenses- they seem a good idea in theory but are a lot more expensive.
Would be gratefull for advise.
Thanks Bob
In reply to bobpilgrem:
I would just get something fairly cheap and bug-like. They'll probably get sat on in the hut, and it's the last thing you want to get stressed about.
Anonymous24 May 2011
In reply to bobpilgrem: Just go for something simple, I done it last year in cat3's in blazing weather. If you get something thats cat4 they'll be just as good (if not better) but not as versatile with the cat3's if you'll be using them in the future (driving etc)
Cat 3s will be fine I reckon. Main thing is to get a pair that fit well and have minimal gap at cheek level in order to minimise any reflected glare from snow.
In reply to bobpilgrem: Have you got sensitive eyes? Are they blue?
I have and find the glare at altitude unbearable without category 4 lenses. Try staring into the brightest light you can find in your cat 3 glasses and see if it hurts. If not you should be ok.