Gray lens - lowers brightness but does not change the true color of the color
Brown and amber lenses - reduce the blue portion of the sunlight, thereby reducing the haze effect caused by blue light, but it is more likely to cause the original color change of the object than the gray coating.
Yellow lenses - more to reduce the fog caused by blue light, so the scenery will become more clear and sharp, but it is also more likely to cause the original color of the object.
Green Lens - Ability to filter some blue light to reduce glare and increase contrast between objects
Rose Red Lens - If you like water or outdoor sports, it is best to wear this lens because it has a very good contrast on a blue or green background.