NiSi 100x150mm Nano IR 中濃度グラデーションNDフィルター ND4（0.6）2段

The optical glass on this ND filter keeps images incredibly sharp even when I stack it with another filter. No weird color cast either, just a clean, natural darkening of the sky that makes buildings pop out nicely.

Even with the sun just peeking over a ridgeline, this filter held the sky detail without adding that nasty blue shift I've seen with cheaper glass. The optical clarity is impressive, no softness in my foreground rocks. It cuts exactly 2 stops as promised, making a tricky cityscape exposure effortles

The skyline shots that used to blow out the buildings are finally balanced—this ND filter does exactly what it says with zero color cast. The optical glass is crisp and the water-repellent coating made wiping off sea spray a non-event. Honestly, it’s the first filter I’ve used that feels truly invis