Hoya - 77mm Star 6 Filter

BOWER 72mm Variable Neutral Density Lens Filter: Compatible with most analog and digital camera lenses with 72mm filter size; enables you to use fast film in bright conditions; reduces light; aperture dropping for wider focus; up to 8 stops of light

The Hoya 77mm Star-6 lets you turn any pinpoint light source like Christmas lights, street lamps, car headlights, and flashlights into 6-pointed stars. Now you can turn an average, boring picture into a dynamic creation. The filter simply attaches to the front of your lens like any filter.