Product Highlights:

• The effect is produced by a series of thin lines etched into the flat optical surface of a clear filter
• The size and brightness of the star lines produced are first a function of the size, shape, and brightness of the light source: You have additional control through the choice of a particular spacing between the lines on the filter
• These spacings are measured in millimeters and range from 1mm to 4mm: A 1mm spacing has twice as many lines as a 2mm spacing and will produce a brighter star for any given source
• Lines in one direction produce a two-pointed star, just a streak through the center of the light
• Made in the U.S.A.