I like that it's a variable ND and polarizing filter combined. It makes setting up my shot so much easier, without trying to put in two different filters. On top of that, this filter feels and sounds really solid. Another important thing is that this filter doesn't have the annoying "X" that some others have. I would recommend it and think it would be great for anyone who wants a decent ND and polarizing filter without spending hundreds of dollars.

Good value for money and produces good results.

Great having a variable and ND filter all in one. No colour cast visible. Recommend.

I have always been a fan of K&F after buying their tripod, so I was pretty sure about the quality of ND.This is 1of 3 NDs I have purchased for my crew, and I should say this is amazing.I would start with the build quality, and it's pretty sturdy, the casing is aluminum and lightweight.Coming to the colors, I didn't see any difference in colors with ND on at Min and ND off. Also, the cutting down of light from ND 2 to ND 32 is so accurate for an ND(measured with exposure meter).

I was given this filter by K&F concept to review, but this is my honest review based on using it for a few shoots of both photography and videography. The filter comes in a really nice plastic protective case, also included is a cleaning cloth in a pouch. The cardboard box itself is sturdy with a magnetic opening.I asked for the 77mm filter to fit my biggest lens and got some step up rings so I can use this on all my lenses and by stepping up you wont get vignetting. The filter itself feels very good quality and well built, the exposure adjustment ring allows you to choose between five stops, it feels like a fluid video head and will not move on its own.I didn't witness any colour shift, or any photo or video issues using this filter, also there was no sign of the black X some filters show when the two optics cross at their maximum point.I would definitely recommend this variable ND filter, its at a very good price point and by using step up ring for around £10 you can have this one filter work on all your lenses, that is a lot cheaper than a few sets of ND filters when your lenses have different sized filter threads.Using this on video at either 25 or 30 fps using shutter speeds of 50/1 or 60/1 this filter easily cut down the light to stop my footage being over exposed.I have added a review on YouTube and video demo, you can find this by searching youtube for this product description.