Purchased together with the Hoya HMC ND400H67, I use it for long exposure or photo on snowy ground with the sun. Hoya is a very good brand of filter, the colors are respected. I advise you to shoot still in raw format to make up post-treatment, the small magenta cast that may appear when you pair your filters. However, I have not had to do this kind of problems with this model. Good pictures!