37mm Star Filter For Camera

Star filter is one of camera filters,as the center of light emitting, include 2 lines,4 lines,6 lines,8 lines,16 lines... Star filters turn point light sources and specular highlights into stars. Commonly seen star filters can generate four to sixteen points stars.A star filter consists of two glasses.The top one is rotatable and has a grid etched into the glass surface. The following image is a four-point star filter.The etched grid is easily seen. The distance between two