Uvex Lens Colors:
Variotronic: The future before your eyes. Internal light sensor reacts to the incident light and activates the appropriate lens technology. Changes in a raction of a second or manually at the touch of a button. LCD (liquid crystal) film. Goes from Clear (90%) to red (53%) to blue (32%) to violet (11%).
Variomatic: Fast photochromatic lens automatically adjusts to prevailing light conditions. Neutral tint improves versatility. Protection level: S1-2*, Visual Light Transmission: 60% to 25%.
*"S" Value is an internationally recognized standard that classifies optical lenses according to the amount of light transmitted by the lens. This is a useful measure to compare lenses and identify appropriate uses.
0=80 to 100% (virtually clear for debris and wind protection)
1=43 to 80% (for normal cloudy to partly cloudy conditions)
2=18 to 43% (for normal sunny to partly sunny conditions)
3=8 to 18% (for full sun)
4=3 to 8% (for intense bright light, like on summer glaciers)