Works well with my P series holder. Fits up to 72mm lenses on my camera Havent tried it on 77mm lenses yet.
One issue is my 18 - 200 DX lens when wide open at 18mm and with a slim CPL attached I get vignette at the corners if using more than one filter at a time. I haven't taken the CPL off to check if this occurs with no CPL attached as I am happy to just tweak to around 20+mm focal length and it disappears.
Makes water look very smooth and mystical.
I have larger 77mm lenses for my FX camera but no step up ring yet to see if this works with say a 80 - 200 or whether I need the larger series.