May 30, 2009 at 5:52 pm
#19092
Rab
Participant
That’s a very good question and I don’t know the answer except to say that I commute year round in sometimes very bright sunlight (California) and also on rainy overcast days (including some tunnels) and sun/dark never bothers me at all. Because of the tunnels, I wouldn’t even consider a smoked/tinted/mirrored visor and I think that they’re mostly worn to “look cool” (or anonymous), but I might be wrong.
If I get some time later, I’ll experiment a little and post the results.