1、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 surface of colorless optical glass, resulting in the diffraction effect of light, and the formation of a radiant effect 2、HD Coating: Anti glare coating, reduce stray light into, anti glare, anti scratch, anti oil, waterproof. Star filter on the market, the basic is not coated 3、Double Frame Rotating Design: The camera filter adopts gold thread knurled frame, which can rotate 360 degrees to meet people's different needs 4、Widely Used: Camera filter can be applied to night scenery, glass products, metal products photo, can bring you excellent use experience 5、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 Item Type: Star Filter Material: Aluminum Alloy and Optical Glass Weight: Approx. 60g / 2.1oz 1 x Star Filter 1 x Storage Box