








📸 Elevate your shots with precision light control—don’t let your lens miss out!
The K&F Concept 37mm Variable ND Filter features premium AGC optical glass with 8 multi-layer coatings to reduce glare and reflections. It offers adjustable light reduction from ND2 to ND400 (1-9 stops) with smooth 360° rotation for precise control. Its slim 7.4mm CNC-patterned frame ensures easy handling and secure fit on all 37mm lenses. Treated with an oxidized sandblasting process, it minimizes stray light and reflections, making it an essential accessory for professional and enthusiast photographers seeking versatile, high-quality light control.







B**R
Pro grade, excellent results
I use this with good quality step rings so I can hot swap it through prime lenses. Saves buying all different sizes. Make sure you get good quality step rings though or you will have permanent additions to your filter...Very good quality ND. Like it says, no 'X' cross at any setting. Smooth to adjust but stays in place at the ND you want. Colours are consistent. Stays in my bag at all times.
A**I
Good
Good
K**I
Huh
Bought it but it's not much helpful for me as a videographer.i am using it on sony a7s3. It 10 stop I mean kind of very dark and there a vintage in left upper portion even I dropped to f1.8 iso640 and 1/100 still. And it's very annoying when you facing towards sun completely balck the vintage is allover. Won't recommend it. Or maybe I don't understand this product use.if I am wrong I will change my review.i tried it it's very dark and I will try now 6 tops nd filter
Trustpilot
2 days ago
2 weeks ago