Vivitar Filters are manufactured from high-quality solid optical materials.
Each individual filter is heat-treated to avoid any rare movement or
This Variable Neutral Density filter reduces intensity of all wavelengths or
colors of light equally, giving no changes in hue or color rendition. The
purpose of standard photographic neutral density filters is to allow the
photographer greater flexibility to change the aperture, exposure time
and/or blur of subject in different situations and atmospheric conditions.
Instead of reducing the aperture to limit light, the photographer can add a
ND filter to limit light, and can then set the shutter speed according to
the particular motion desired and the aperture set as needed.
With the VIVITAR variable range ND filter, you can enjoy total control of
virtually any lightin environment. Simply turn its exterior ring to access
any of 8 ND settings without wasting time changing or adding filters