The Tiffen 4.5" Round 0.6 Neutral Density (ND) filter has several uses and offers the possibility of achieving otherwise impossible results.

It allows the photographer to adjust exposure without affecting colour balance. ND filters appear grey and reduce the amount of light reaching a digital camera's sensor or the film plane of a traditional camera. Neutral density filters are used to create unusual special effects such as capturing the "blur" of water cascading in a waterfall or the swirling effect of urban traffic.

Tiffen's ColorCore glass is produced by a process that involves permanently laminating the filter material between two pieces of optical glass, ground to a tolerance of one ten-thousandth of an inch, then mounted in precision aluminium rings. Determining which neutral density filter gives ideal results for a given lighting situation requires knowledge, experience and a collection of such filters.

Neutral density filters have four main uses
-Allow the use of slow shutter speeds, particularly with fast films, to record movement of subjects such as waterfalls, clouds or cars
-Decrease depth of field by allowing the use of larger apertures, which helps separate subjects from their background
-Decrease the effective ISO of fast films (above 400 ISO) and allow their use outdoors in bright situations
-Allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes that could cause overexposure

ColorCore Technology
-Tiffen filters are manufactured using ColorCore technology, a strictly guarded exclusive process that involves permanently laminating the filter material between two pieces of optical glass, ground to a tolerance of one ten-thousandth of an inch, then mounted in precision metal rings
-The ColorCore process allows Tiffen to control the colour and density of their filters, as well as the characteristics of special effect filters with much greater precision than typical mass-tinted filters, which generally exhibit colour and density variations

Superior Quality
-Hollywood's largest film studios trust Tiffen filters for their multi-million dollar productions. Superior quality and design make Tiffen the preferred choice of filmmakers, professional photographers and even NASA
-Tiffen has also received an Emmy from the Academy of Television Arts and Sciences for excellence in engineering