Promaster 5669 43mm IRND64X（1.8）HGX Prime 濾鏡

I was wary about stacking this on my lens for long exposures, but the 1.8 density gives me exactly the dark skies I wanted without any color shift. The threading is smooth and it screws on and off my 43mm without ever binding.

The glass is perfectly clear and the IR-cut really does eliminate color casts in bright daylight. I’ve been using it for long exposure seascapes and the 1.8 density gives me smooth, silky water without any weird magenta tint.

I was worried the 43mm thread might scratch easily, but the HGX Prime coating feels incredibly solid in hand. It darkens exactly 6 stops as advertised, giving me smooth, silky water shots even in bright sunlight.