1、55mm Star Filter: The use of star filter is affected by the focal length, aperture, and light points in the picture. After using the star filter, the effect of a telephoto lens is better than that of a short focus lens.The effect of a medium aperture is better than that of too large or too small an aperture. The smaller and brighter the light spot in the picture, the better the effect. 2、HD Coating: Utilizes anti glare coating, reduces stray light intrusion, scratch resistant, oil resistant, and waterproof for clear and sharp images. Most star filters on the market do not have a coating. 3、Compatible with 55mm Lenses: Works with 55mm filter thread. Please verify your camera's lens thread size. 3.5mm thickness, ideal for wide angle lenses. Rotate the filter in any degrees to give star effect in your desire. The outer rim of each filter is knurled for easy grip and adjustment. 4、Function: The star filter can make every bright spot in photo producing star shaped flash like dazzling effect. The brighter the spot, the more pronounced the star effect. Perfect for night scenery, precious stones, glassworks, metal works photography. 5、Premium Craftsmanship: Made of optics glass, top level of transmittance and excellent sealing, better tightness. No worries about dropping or loosening during shooting. Package includes a 55mm 4 points star filter, a 55mm 6 points star filter, a 55mm 8 points star filter, a filter pouch.