Specifications:1. Blurring Water Motion (E.G. Waterfalls, Rivers, Oceans).2. Reducing Depth Of Field In Very Bright Light (E.G. Daylight).3. When Using A Flash On A Camera With A Focal-Plane Shutter, Exposuretime Is Limited To The Maximal Speed (Often 1/250Th Of A Second, At Best), Atwhich The Entire Film Or Sensor Is Exposed To Light At One Instant. Without Annd Filter, This Can Result In The Need To Use F/8 Or Higher.4. Using A Wider Aperture To Stay Below The Diffraction Limit.5. Reduce The Visibility Of Moving Objects.6. Add Motion Blur To Subjects.7 .Extended Time Exposures.Package Includes:67Mm Dmk Nd Filter ---------1Pc