Starlight mirror, also called light mirror or scattering mirror, is a special filter. Different types of vertical and horizontal linear stripes are etched on the glass of the starlight mirror. Under the action of point light sources, the bright spots in the shooting scene will be diffracted, so that each light source point in the shooting photo will emit a specific beam of light, thus achieving the effect of light emission. The starlight mirror will produce different effects of star flash according to the number of thin lines engraved on it and the pattern formed by thin lines. Common starlight mirrors are: cross mirror, snowflake mirror and miter mirror. When shooting jewelry, water, starlight, lighting and other scenes, you can get different types of light. The starlight mirror will soften the image slightly, but its main function is to produce a radiation effect around the light source. The starlight mirror is usually used to shoot the reflection of light or objects at night, so as to achieve the radiant effect and make the photos have fantastic artistic effects.