Why you can't take satisfactory photos? It may have something to do with the selection of camera lens filter. ND lens provides effective methods for better shooting effect. Today we are glad to offer you this 77mm Digital Variable ND Camera Lens Filter Gray !#!amp!*! Black Border! This standard photographic filter is to allow the photographer greater flexibility to change the aperture， exposure time or motion blur of subject in different situations and atmospheric conditions. Meanwhile， it decreases exposure when taking pictures and enables slow shutter speeds to be used. A must-have for each shutterbug!                                    Features            New and in good working conditionEnable slow shutter speeds to be used， especially with high-speed films， allowing film to record movement in subjects such as waterfalls， clouds， or carsDecrease depth of field by allowing wider apertures to be used， in turn helping to separate subjects from their backgroundDecrease the effective ISO of high-speed film and allow it to be used outdoors in bright situationsDecrease exposure when taking picturesAn adjustable camera lens filter; you can randomly adjust ND value to meet your needIdeal for professionals or shutterbugs                                                            Specifications             Mode     77mm Variable ND    <br> Dimensions     3.03" / 7.7cm    <br> Color     Gray & Black Border     <br>                                                             Package Includes            1 x Digital Filter<br>