GamColor Cine Neutral Density Filters from Gam are deep dyed polyester color filters in a superior color medium for use with all types of light. ND filters are often used on windows to reduce the brightness and balance the contrast ratio of daylight to the indoor or shadowed area.
Neutral Density (ND) Filters have several uses and offer the possibility to achieve otherwise impossible results. They enable the shooter to adjust exposure without affecting color balance. ND filters appear grey and reduce the amount of light reaching the film.
Determining which neutral density filter yields suitable results for any given lighting situation takes knowledge, experience, and a collection of such filters. Speaking generally, in photography, the 2-stop value (ND 0.6) effectively compensates average situations.