The build quality is great and in practice makes the neutral density filter cuts a fine figure. This filter I use, like many others, for photographs with long exposures during the day. Above all, water motifs. With the results I was so far very satisfied. But most of all I use it for filming! In order to ensure a better film look, I turn eg with a shutter speed of 1/50 sec outdoors. As you come to a gray filter not over as the ND2 to ND400 52mm neutral density filter.