some of these are too dark for night time riding - you want a 72% light transmission factor (as a gauge 'normal sunglasses' have an 18% transmission) - anything lower than that and vision starts to be impaired in light lower than full daylight - anything you gain from increased contrast via the blue filter is lost.
some of these are too dark for night time riding - you want a 72% light transmission factor (as a gauge 'normal sunglasses' have an 18% transmission) - anything lower than that and vision starts to be impaired in light lower than full daylight - anything you gain from increased contrast via the blue filter is lost.