In contrast to classic ND filters, the intensity of this filter can be adjusted in a range of 2-32. This is done by turning the filter; for this purpose there is a small Nupsi on the filter, which can be used as a 'handle'. Smart.

Supplied with a high-quality case.

The filter doesn't exactly move smoothly. If it were, it would be difficult to set and ideally maintain the desired filter effect. So: there is always something.

The filter is quite bulky overall due to the bonus function. Personally, I wouldn't put on a filter for a single f-stop, it's actually not worth it.
However, I think it's good to remain flexible when setting the effect.

Processing top, color distortion 0. All good.

Use the 72mm version on a Sigma SD 14, fits perfectly and saves me many, many different darkening filters. A really great thing, didn't even know that such a thing existed. Previously had 4 pieces of different gray filters, which I could now do all out of the bag. Sounds like a lot of money at first, but I only calculate the expenses from my 4 filters...oh oh I would have gotten off much better here. Now I can !infinitely! adapt to all lighting conditions, a dream.

Quality: +++++
Processing: +++++
Compactness / size: +++++
Application: +++++
Glass quality: +++++
Stability / robustness: +++++
Flexibility: ++ +++
Functionality: +++++
Accuracy of fit: +++++
Value for money: ++++

This screw-on filter ensures that you can reduce the light for the photo shoot. This allows you to achieve a longer exposure time, which can be used well for certain situations.
We have now tested this filter a number of times and so far we are quite happy with the results we have achieved.
What the filter does or is supposed to achieve, it implements well. In this way, waterfalls, streams or passing clouds can be softened or faded easily. Or you can also use such a filter quite well in areas that are very busy with people. With a long exposure, you can easily make moving people disappear from the photos.
But you can certainly recommend him. Beautiful effects, no visible color changes (blue cast, purple cast, etc.).

The K&F Concept coating technology gives the filter a very low reflectivity, which ensures good light transmission, thereby reducing flare and ghosting, preventing glare and not affecting the original performance of the lens.
A really great filter.
The nano-coating is waterproof, dirt-resistant and scratch-resistant and therefore ensures the filter has excellent durability.

The processing, design and quality looks very high quality and very well made, the filter glass texture also makes an extremely positive, scratch-free impression.
The variable ND filter reduces the light by up to f-stops, that means ND2-32 (1-5 stop), which causes no color cast and no loss of image quality.
On the subject of autofocus and filters:
The autofocus still works well with the Sony A7 Mark 2 or the Sony 6500 combined with various lenses, although it is a bit weaker. Here you just have to switch to manual focus.

All in all, a really well-made filter, with the advantage that it is easy to attach compared to square-wave filters, which require a square-wave filter attachment.
This filter arrives in a neatly made box in which to keep it safe and well.
So far, this filter has convinced us without any objections, so a clear recommendation.

There are filters with stepless adjustment options. They're good, no question. But if you want to reproduce very specific - exact - settings, an ND filter with detents is better suited. Because once you've taken a shot with a certain ND Set, you can make all sorts of other settings, but when it's needed, you can easily have the same desired setting. And exactly the same! Therefore I can recommend the filter - regardless of whether you are a professional or an interested amateur.

The K&F Concept filter arrives safely packed here. It comes with a duster and a storage bag.

The processing of the filter is really first class. High-quality materials, great handling, a perfect fit and not too heavy on the lens or in the hand.

The filter is simply attached to the lens using a rotating mechanism.

The filter conjures up wonderful images that no longer have to be reworked.

The price is certainly a deterrent - but in my opinion you get one of the best filters on the market. Professionals MUST strike, amateur photographers CAN strike without hesitation

As usual, the quality of K&F Concept is excellent. I own several filters from K&F Concept and can only recommend them. The ring adjusts buttery smooth, but not so easily that it would adjust itself. The photo quality does not suffer at all and you get super sharp photos.
This time I decided to use a 58mm filter to cover another lens. As always, it fits perfectly, even if it is rather a cheap lens. I can only recommend the filter. For the bargain hunters - I have always bought the filter in the largest size of my lens (77mm) and then held it in front of all other lenses. This also works very well.

Nothing bad to say, magnetic filters are always easier, but this particular ND gets the job done in all other aspects. These ND filters are truly colourfast, you won't be disappointed.

This filter is perfect for mirrorless digital cameras. It is continuously adjustable from ND2 to ND32 and the camera follows the viewing in real time.
I enthusiastically used this filter for detail photography in bright sunlight and with an open aperture, thereby reducing the brightness.
The workmanship and material quality is excellent, I don't have any complaints about the adjustment mechanism that other reviewers write about.
With me, he now regularly sits on my 18-55 Fujinon and in front of my Fuji XT-20 for cropping with an open aperture.

I'm excited.

5 stars for a reasonably priced product!

The delivery was quick. In fact, this filter corresponds to what you record. No color changes. The last two photos were taken with and without a filter. The darker image comes from the filter. Level 1 already has a lens hood. I recommend everyone to use this.

I film and take photos on hikes and other activities. I need an ND filter for filming. I hate constantly turning the filter up and down to switch between filming and taking photos. The variable ND filter I used previously had 2 stops of darkening as the starting stage and produced a noticeable color cast. So it was useless for photography. With the ND-Vario variable ND VND filter, I can usually leave the filter on when taking pictures.