VLT - Visible Light Transmission. This is a percentage based on the amount of light that will come through to your eyes. Generally, a higher percent VLT makes it easier to see through the lens in low-light conditions. A lower VLT percentage will be more useful during very bright conditions, and when dealing with harsh reflective glare from the sun. VLT % may vary between spherical and cylindrical lens shapes.
ChromaPop Snow: Divided further by three categories, Sun (Lower VLT%), Everyday (Medium VLT%), and Storm (Higher VLT%), Smith's ChromaPop filters two specific wavelengths of light that cause color confusion. By doing this the lens delivers greater definition, more natural color, and unmatched clarity to allow you to see more detail.
Photochromatic: This technology is a grey inner lens layer that changes VLT% based on the lighting conditions. This shifting spectrum differs depending on the other lens layers.
Ignitor: A mirror lens layer that is used to reduce eye fatigue.
Sol-X: Mirror lens layer best used in bright lighting conditions.
Flash: A lens layer that adds depth and contrast during stormier weather conditions.
Sensor: A mirror lens filter to help reduce the intensity of glaring light from reflections as well as tints to create contrast in flat lighting.
ChromaPop Sun (9-13% VLT)
Sun Green Mirror
Grey base lenses are used to keep color tint closer to neutral.
Sun Platinum Mirror
Sun Red Mirror
ChromaPop Everyday (23-50% VLT)
Everyday Green Mirror
Medium to Bright
Brown base lenses add warm color for a touch of contrast on cloudy days.
Everyday Violet Mirror
Everyday Red Mirror
Photochromatic Rose Flash
Medium to Bright
Photochromatic lens quickly changes VLT% based on lighting. Rose base lens increases contrast for overcast days.
Everyday Rose Gold
Rose base lens increases contrast for overcast days.
ChromaPop Storm (50-65% VLT)
Storm Yellow Flash
Yellow Blue Flash Base lens for stormy low light days.
Storm Rose Flash
Blue Flash base lens helps with contrast when there's little detail.