ND (Neutral Density) filter sunglasses are specialized eyewear designed to reduce the amount of light entering the eyes without altering color perception. These sunglasses work similarly to ND camera filters, dimming bright light evenly across the visible spectrum.

Key Features of ND Filter Sunglasses:

1. Light Reduction: They lower overall brightness without distorting colors, making them ideal for bright outdoor environments.
2. Glare Reduction: Helps minimize glare from reflective surfaces like water, snow, and roads.
3. UV Protection: Most ND filter sunglasses offer protection against harmful UV rays.
4. Consistent Tint: Unlike polarized sunglasses, ND filters maintain uniform dimming rather than selectively blocking horizontal glare.
5. Ideal for Outdoor Activities: Useful for driving, skiing, hiking, and other bright-light conditions.