Very high-quality filter: combination of pole filter and gray filter. Who needs that?
I think anyone who wants to take good photos. The polarizing filter reliably reduces reflections and allows colors (e.g. slightly cloudy sky) to shine much more intensively. The pictures already show the simplest use. The gray filter allows longer exposures even during the day. Of course, you need a tripod.

By turning in one direction, you first adjust the polarizing filter, then you can make the gray filter increasingly darker.

The workmanship is very high quality, which also justifies the price. Packed in a high-quality cardboard box and a synthetic leather box. It's a great gift for photo freaks.

Have a look at Siegfried Eichhorn's video on Youtube about ND filters. Then press “Order” at the latest!

With suitable adapter rings, I can now use the filter on all my lenses. I'm impressed by the quality.

The K&F Concept Nano-X True Color ND Filter 49mm Polfilter&nd2-ND32 arrived quickly.

It is very neatly and securely packaged.

The filter is of very good quality. Very high quality materials Great workmanship.
The settings can be adjusted continuously using the small red handle on the edge.

With its 49mm, it fits exactly on my kit lens. If you have lenses with a larger diameter, you should choose a correspondingly larger filter.
I still need to practice using the filter correctly. But I'm already really excited.

This is even better than I was expecting. The filter comes in a really nice box that gives the whole thing a really premium feel. It’s really well-made and works great. I’ve been filming with this for a few weeks now and I’m so happy with the footage I’m getting with this filter. I haven’t noticed any kind of color-cast or anything like that. The footage just looks clean. Also, I like that this is the kind of filter that has hard stops, so you can’t over-rotate it. Highly recommended.

First let's recognize that this filter is very well presented in a beautiful leatherette case itself packed in very neat cardboard.
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I love gear that enables me to cut down on the amount of stuff that I have to bring. This filter features both ND and CPL. The knob on the side of the filter can conveniently swap between stops. The glass looks, feels and performs exceptionally. So far I'm loving the results I'm getting from it.

This K&F Concept variable ND filter is actually really amazing. It costs quite a bit less than some of the other big brand filters, yet, it isn't cheap by any means. It reeks of quality, and from what I have seen, appears to be very well made. I noticed while using it my images appeared even more crisp than without it, which I thought interesting. The threads are good, and I had no issues installing this and removing it from my lens. The filter rotates smoothly, and the variable portion really does make a huge difference by allowing you to open up your lens more and create really smooth bokeh. I'm definitely glad I ordered this filter because it has make quite a nice difference in the quality of my images.

Good morning everyone.

A filter like you rarely find.
Careful quality with a very well-made case worthy of a jeweler.
The adjustment is smooth, the filter offers a wide range of settings.
For my part it is mounted on a 28-80L f2.8.
Extremely happy with the result.
Friendship, Laurent

K&F has another great product here with this variable ND and CPL filter combination. For most situations, I prefer a combo filter like this one just for the sheer convenience of it when I'm just trying to get good shots in the moment and not wanting to fiddle with separate filters. The finger tabs on the ND filter make it really easy to adjust and the filter stays in place one you get it set without having to worry about it moving around on you. The filter comes with a quality soft case that protects it well for when it gets tossed back into your camera bag. Overall, I'm very pleased with it.

This is a great combo filter. It comes with a very nice leather-like pouch and feels sturdy and nice. I got the 67mm and it fit perfectly on my Canon RF 85mm f2.0 prime lens -- look on the rear of the lens cap for your lens' diameter. The lens cap fits on top of the filter just fine.

I also have an RF 35mm f1.8 with a 52mm diameter -- I ordered the K&F Concept 52mm to 67mm Step-Up Lens Filter Adapter Ring so that I can easily switch this expensive filter back and forth rather than having to buy two filters.

One thing to beware of is that it seems like it would be very easy to over tighten this and get it stuck. It doesn't screw on and stop -- you can keep turning it. I nearly went too far the first time I put it on so now I don't tighten it as far as I would like.

The filter itself works wonderfully. I like the combined ND and CPL filters. The ND is for removing some light when taking videos (since you can't really adjust shutter speed for videos) and the CPL is for removing light reflections for videos or photos. It makes it look like when you put on a fancy pair of polarized sunglasses on a bright day.

I do wish the variable turning handle had some hard stops or even any kind of tactile click when it gets to the next stop, but it is smooth and so you have to have it away from your face and look to see when the dots match up visually rather than being able to click through the settings with the camera up to your face the whole time.

Overall though, this is a terrific filter with high quality engineering from a trusted brand. Would highly recommend this.

The presentation of this filter is great.

I think it's an indispensable accessory for sunny days.

It has a regulation with values of 1-5.

It's for a 67 lens, in my case I'm going to put it on my 85 F1.8 Sony and my 18-70 F4.

It is easy to install, since it is only threaded.