The hoya 62mm pro nd 500 filter opens up a world of creative possibilities and is designed to reduce light from entering the lens by up to 9 fstops without affecting colour balance this 9 stop neutral density filter allows you to use slower shutter speeds than would normally be possible an nd filter is the ideal accessory for keen landscape photographers who want to take their images to the next step and is often used to make the clouds look soft and blurry or to give waterfalls and seascap