Digital HT (High Transmission) Star 4pt 2mm Multi-Coated Glass Filter - Tiffen Star filters create multiple points of light, or "stars," streaking outward from a central light source. This can make lighting within the scene take on a more glittering, glamorous appearance. This 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. It 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.
Tiffen, an industry leader in the design and production of high-end filters, has produced a series of filters which contain the strength of a titanium coating along with high-end optical glass.
Using their patented ColorCore technology, this filter represents the highest scratch-resistant durability available. There is no need to worry about cleaning this filter since the coating protects the surface thereby maintaining the optical quality of the glass.
The Titanium coating consistently reflects less than 1% of the imaging light hitting the front surface of the filter while transmitting nearly 99%.
62mm Digital HT (High Transmission) Star 4pt 2mm Multi-Coated Glass Filter