2. This is a Point line Star Filter. Add some sparkle to your night shots, city skylines, street scenes, lamp posts, streetlights, car headlights, candle lights, and gaslights, any place there is sources of points of light.
3. Protect your expensive lens from dust and scratch while not lowing your photo quality.
4. Light Aluminum, lightweight, multi-layer coated optical glass lens, high transmittance and low reflectivity.
5. Portable and durable, easy to install.