Auckland from Bayswater Marina under angry skies. Went out early this morning to try the new NiSi ‘Natural night’ filter. The idea is to reduce light pollution from night shots and it works brilliantly. It is evident in this BNW file it has cleaned the file of any nasty uneven artificial light, so when you convert to BNW you get black and white. Very cool addition to my kit, works really well also with their 10 & 15 stop ND filters I also carry.