I feel quickly could be relative for some. I think its a pretty quick transition to dark, but not back to clear. The only thing is it doesn't get completely black, but still gets dark enough for sun protection. But would be that mirror black you would get from a dark visor.how do you get on with the visor, does it transition quickly?
post up a picShark Spartan RS Carbon Shawn Skin - Apart from the irritating whistle noise while the visor is up, it is a great helmet.