Was a bit skeptical first decide to buy a cheap ND filter. But he should make it to try it go as the Basics range. He does :-) and even very good. What many wrote the gray filter I can leave a color cast in the pictures not confirm until now. It is neutral as it should be. So far, all pictures shot during the day and at sunset with shutter speeds of 45 and 120 seconds. Just perfect. Running water with canoeists. Water drawn beautifully smooth. Canoes away :-) Clouds are super nice and soft and can be a great movement dynamics. Have the filter in use on a Canon 5DMK2 with Canon 16-35L lens.