K&F Concept 55mm ND2-ND32 Filter Neutral Density Variable Filter ND2 to ND32 for Camera Lens NO X Spot,28 Multi-Layer Coatings,Waterproof (Nano-X Series)

I was pleasantly surprised by this variable filter. I use this with Moment lenses to film on my iPhone. I previously tried out another brand but the distortions made the video unusable. I was skeptical about the K&F Concept filters because the price was so low. But the reviews were good so I gave it a try. The packaging and case was nice and the filter itself felt like a well-engineered product. Everything was higher quality than what I was expecting. Then I tried the filters and my video came out great. The only issue I really notice it when you crank up to the highest setting. But that seems to be the case for just about every variable filter I have seen. If you stay just under that, it is perfect. I even bought a few additional filters for my regular camera. For the price point, you get a really good product. I would definitely recommend this.

Makes noice while screwing the filter to the lense. Even left a scratch on the lense thread.

Upon opening the package, I noticed a small scratch on the inside of one of the glass elements. I had a similar problem with the 77mm version of this filter, but that one had a light spot of some sort on the inside. I’m not sure how well the filter performs since I put it right back into the package, but the quality control is clearly lacking.

Went on perfectly and quality feels great. Used it on a sunny day and was very impressed.

It has great use. It is helping me to learn and grow. Great build definitely will buy it again and more products from them.