The Haida NanoPro Soft Star 2 in 1 filter combines a star filter and a soft focus filter in one, it creates multiple light rays, which radiate out from point light sources in the image, while soft focus adds a halo around the light sources.
Generally, mid-range or larger apertures are sufficient to achieve a good star effect, this effect is produced by a series of thin lines etched into the clean optical surface of a clear filter.
It creates a moody, dreamy glamorous atmosphere.