Oakley Goggle Lens Tint Guide

Terminology:

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.
FC - Filter Category
FC4 / Bright Sun & Bluebird: 3-8% VLT
FC3 / Variable Conditions: 8-18% VLT
FC2 / Snow, Fog & Clouds: 18-43% VLT
FC1 / Lower-light, Snow, Fog & Clouds: 43-80% VLT
FC0 / Snow, Fog, Clouds, Night: 80-100% VLT

FC4 Lens / Bright Sun & Bluebird / 3-8% VLT
Lens Tint	VLT
PRIZM Black Iridium	3-8%

FC3 Lenses / Variable Conditions (Sunny to Partly-cloudy ) / 8-18% VLT
Lens Tint	VLT
PRIZM Sapphire Iridium	11-18%
PRIZM Jade Iridium	11-18%
PRIZM Torch Iridium	11-18%
Fire Iridium	12-16%
Dark Grey	10-14%

FC2 Lens / Snow, Fog, Clouds (Low to Medium Light) / 18-43% VLT
Lens Tint	VLT
PRIZM Rose	18-43%

FC1 Lenses / Snow, Fog, Cloud (Low Light) / 43-80% VLT
Lens Tint	VLT
PRIZM Hi Pink Iridium	35-40%
PRIZM Persimmon	43-80%
Hi Yellow Iridium	43-80%
Persimmon	43-80%

FC0 Lens / Night, Snow, Clouds, Fog (Low Light) / 80-99% VLT
Lens Tint	VLT
Clear	80-100%