Promaster 5659 55mm 可變減光鏡 - HGX Prime（1.3 - 8 級）

Finally a variable ND that doesn't introduce that ugly X-shaped color cast at the darker end. I've been using it for landscape shots and the glass is noticeably sharp, even at 8 stops.

I was worried about getting a good exposure in bright sunlight, but this filter smoothly adjusts from 1.3 to 8 stops, making it perfect for video work. The ring rotates with just the right amount of resistance, and the glass is clear with no color cast that I can see.

Finally, a variable ND that doesn't introduce that dreaded color cast at the darker stops. The 1.3 to 8-stop range is perfect for dialing in exactly the right exposure for silky waterfalls without carrying multiple fixed filters.