ND Filters

In photography and optics, a neutral-density filter, or ND filter, is a filter that reduces or modifies the intensity of all wavelengths, or colors, of light equally, giving no changes in hue of color rendition. It can be a colorless (clear) or grey filter. The purpose of a standard photographic neutral-density filter is to reduce the amount of light entering the lens. Doing so allows the photographer to select combinations of aperture, exposure time and sensor sensitivity that would otherwise produce overexposed pictures. This is done to achieve effects such as a shallower depth of field or motion blur of a subject in a wider range of situations and atmospheric conditions.

ND1000 - 10 stop
ND500 - 9 stop
ND200 - 7 2/3 stop
ND100 - 6 2/3 stop
ND64 - 6 stop
ND32 - 5 stop
ND16 - 4 stop
ND8 - 3 stop
ND4 - 2 stop