Filter try out

Recently I bought ND8 filter. I've never had any sort of filter before, so this was pretty exciting to see how much does the ND8 filter dim the photos. I took this photo around 11pm, the weather was still pretty bright even though the sun had gone to sleep beyond the horizon. I am satisfied with the results, so I will definitely use this filter in the future as well. 30 second exposure makes the surface look pretty smooth, which looks pretty damn cool in my opinion.

EXIF:
Exposure: 30 sec
Aperture: f/11
Iso: 200
Focal lenght: 12mm