Tifosi Fototec is our line of photochromic sunglasses. Each lens has a variable tint with particles that interact with the light as it hits the lens. The brighter the sun, the darker the tint. As the light dims, the tint fades, providing a clear view. Photochromic lenses come in brown or smoke shades. Looking for a lens with the lightest tint in conditions with the least amount of sun? Try Light Night Fototec.