This filter seems to be nice for the price. I took a few pictures of local creeks with rapids. Well I was glad to see that the resulting pictures looked almost as sharp as the ones taken without the filter, but I got very frustrated with the color shift. What I got were purplish-reddish pictures - super unnatural colors. I tried to fix the colors with photo processing software, but it was tedious and difficult because certain elements in the picture while having quite different hues and colors in reality ended up being the same color in the picture, and there was no easy way to separate them. So I decided that the money I saved on this filter I had to pay with the time I spent fixing the colors and it was not worth that. In the end I returned the filter. I attached unprocessed image. You can see how bad the color is, and there is virtually no way to separate gray stones brownish bottom of the stream, light-orange last year leaves and the dark greenish tree trunk. Changing tint and HSL settings helps, but the colors are still so much off. Oddly, the green is the only color distinct and close to the truth.P.S. also at max setting the filter produces x-shaped darkened areas in the picture. So do not expect to use at max setting.