Material: The camera filter is made of aluminum alloy, optical glass material, strong and durable, not easy to damage, long service life, with strong practicability Widely Used: Camera filter can be applied to night scenery, glass products, metal products photo, can bring you excellent use experience Double Frame Rotating Design: The camera filter adopts gold thread knurled frame, which can rotate 360 degrees to meet people's different needs Principle: Starlight filter is a kind of camera filter, centered on the luminescent point, which is a series of regular etched equal lines on the of colorless optical glass, resulting in the diffraction effect of light, and the formation of a radiant effect HD Coating: Anti coating, reduce stray light into, anti , anti scratch, anti oil, waterproof. Star filter on the market, the basic is not coated