ESS Modular Technology allows all lenses to be quickly and inexpensively interchanged
SMOKE GRAY-VLT: 15, For medium to bright light. An allpurpose daytime lens with unbiased influence on color
Visible Light Transmittance (VLT) represents the percentage of light allowed to pass through a lens.
For example, a lens with a VLT of 23 admits 23% of visible (non-UV) light, filtering out the remaining 77%.
The lower the VLT, the darker the lens