LEE Filters SW150 System 0.6 Neutral Density Standard Filter\nThe LEE Filters SW150 System 0.6 Neutral Density Standard Filter reduces exposure by 2 Stops equally across the entire frame.\n\nND standards can be classed as essential in modern photography.\nThese filters absorb light evenly across the visible spectrum, therefore reducing the light entering the lens without affecting the image colour.\nTraditionally used on film for extending shutter speeds in bright conditions, they are now becoming essential to digital photographers for reducing the sensitivity of sensor chips on cameras which have relatively high minimum ISO settings.\nND Standards extend exposure times allowing for movement in an image, be it people, water, foliage or clouds.\nIf used with care the effects can be impressive.Lee offer ND Standards with a full range of stopping power\nThe aim of the ND Standard filter is to reduce the exposure equally across the entire frame.\nIt is most commonly used to lengthen shut.