NiSi 49mm 自然夜景濾鏡（光害濾鏡）

Shooting from my backyard, I usually battle that orange glow on every long exposure, but this filter cut the sodium-vapor cast so cleanly that the stars actually looked white instead of muddy. The glass feels solid in the hand and threaded onto my lens without any fuss.

I swapped in this filter and the difference in city light halos is immediate, even the Milky Way core popped through more clearly in my test shots. The 49mm size fit my Rokinon lens perfectly with no adapter needed.

Still using this on a tripod with my Sony for long exposures—the way it cuts through the orange streetlight haze while keeping stars crisp is honestly impressive. Didn’t expect such clean results straight out of camera.