ND Filter Sunglasses – UltraLight Polarized

Variable neutral density (ND) filters are handy tools for photographers, in that their opacity can be adjusted simply by rotating them. So, why not use them for adjustable-tint sunglasses? Well, We created Adjustable Tint Sunglasses.

When the front piece is rotated to the left or right relative to the back piece, the filter's tint increases or decreases accordingly. As it increases, the brightness of the light passing through into the lens is reduced by an increasing number of f-stops – the maximum number depends on the make/model of the filter.

The frame of sunglasses simply take two 9-stop variable ND filters and utilize them as their lenses. Users just twist the front piece of each lens to make it darker or brighter. Gradated markings ensure that the two lenses both get set to the same opacity.

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