#1	PRO ND filters reduce the amount of light through the effect of glassdeposition film
#2	PRO ND100200500and 1000 provide dimming effects in aperture steps of 67779 and 10respectivityUse them to create a slow shutter effect
#3	Subject appears crisp and clear while the background becomes a soft blur Also Widely used or photographs of waterfalls and other nature scenes to emphasize movement