The Tiffen Filter Wheel 1 2mm/4pt Grid Star Effect glass filter creates multiple points of light, or "stars", radiating outwards from a central light source. These filters are supplied in a rotating mount for precise placement of the star effect.nnWedding photographers will particularly appreciate the value of this filter. When it comes to special effects shots, why not offer your client a table photograph of the menu or invitation next to a sparkling candle filled with stars?nnShooting at night? Give that street lamp a different, more dramatic appearance by using the star filter. Any point light source will produce the effect.nnNote: With an 8-point filter, the many star lines can tend to dominate the rest of the image, so use it carefully. Generally, medium or wider apertures are sufficient to achieve a good star effect. Always test before critical situations.nn- The effect is produced by a series of fine lines etched on the flat optical surface of a clear filtern- The size and brightness of the star lines produced are primarily a function of the size, shape and brightness of the light source: You have additional control through the choice of a particular line spacing on the filtern- These spacings are measured in millimetres 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 a given sourcen- Lines in one direction produce a 2-point star, just a streak across the centre of the lightn- Tiffen offers symmetrical 4, 6 and 8-point star effects as well as additional asymmetric star patterns through their exclusive Hollywood/FX series (North, Hyper, Vector and Hollywood star effects)nnSpecificationsnn