Night Vision (yellow) lenses: the foggy and dusk， yellow lenses can increase contrast and provide a more accurate video， it is also known as night-vision goggles. Hunting， firing， wearing yellow lenses when the filter is very common. For the rider， for use at night.
 
All gray， double gray lenses: Balanced absorb any chromatography， so watch the scenery will darken， but there will be no obvious color difference， to show the real natural feeling. Use sunglasses to do.
Tinted lenses: can absorb light in the purple， blue， can absorb almost 100% of the ultraviolet and infrared， can block the smooth and shining surface reflected light， wearing glasses can still see the subtle part is the ideal choice for motorists.
 
Transparent lens: Usually in the evening or night use