Precision Design 67mm Variable NDX Neutral Density Filter
With thisPrecision Design  67mm Variable Neutral Density Filter, you can enjoy total control of virtually any lighting environment andreduce brightness without affecting color or depth of field. Simply turn this filter's exterior ring to access any ofsix ND settingswithout wasting time changing or adding filters.Variable neutral density filtersreduce intensity of all wavelengths or colors of light equally, resulting in 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 accordingly.Key Features:• Use larger aperture settings in bright light, permitting a shallow depth of field and beautiful background blur• Will not effect the color or detail of a scene• Eliminates overexposed & washed out images• 6 filters in 1 - Variable range: ND2- ND1000