Great value for money. I have the 82mm size, works great and use it with step down rings so I can use it with all my lenses.

I use this filter for video to get the right shutter speed regardless of the aperture. A variable ND filter is of course perfect for this.
I can't see any loss of sharpness or similar, but as expected there is a slight, hardly noticeable color cast, which you can easily correct on the camera if you want.
In bright daylight, however, a stronger filter would be recommended.

I like that you have 4 ND filters in one.
Has a very good haptic feel and is easy to adjust.
However, if you want it to be even darker, you have to be careful with extremely wide angles - screwing it with another filter can easily lead to vignetting.
Solo excellent - but I'm not a professional, just a hobby photographer. I also think that this article was built for exactly that

ND filters of very good quality, test shots did not show any visible optical errors. Tested with a Sony Alpha 7III with Sigma 24-105mm 1:4 optics, filter size 82mm.
The ND2-32 range is perfect for outdoor portrait and wedding photography in combination with flash technology.
Which has also been noted in other reviews. Due to the rotary mechanism, the adjustment ring has a larger diameter than ND filters with fixed damping. That's why I can't put on the lens hoods anymore. I don't see it as a big problem, but you should be aware.

Very high quality workmanship easy to use and good fit.
The pictures are great and have impurities.
The shutter speed can be varied nicely.
For my purposes, the filter could stop down one f-stop more, but that's definitely a matter of taste.
I can make a clear recommendation

While I still work with interchangeable filters on the drone, I enjoy this adjustable filter on the system camera. At maximum filter setting, a very slight irregularity can be seen, but this disappears completely with a small turn back. At the attractive price you can't go wrong here.

Smooth running. Sleek Design Not a Dread-X you get with a variable ND

PACKAGE AND CONTENTS:
The item was shipped sealed in a rigid cardboard box with a magnetic closure. Inside I found a cylindrical plastic filter holder with:

1 ND filter variable from ND2 to ND32.

DESCRIPTION:
I bought this ND filter to better adjust and filter the intensity of daylight and take pictures with slightly longer exposures even during the day.
Before I bought it, I checked the diameter of my lens and therefore chose the 55mm filter. The filter has a well made thread that screws easily into my camera lens, I had no problems and the settings from N2 to N32 are smooth and smooth too.
In all 5 five densities (N2 to N32) I did not notice any problems with the photos taken, no X-effect or vignetting. Overall, it keeps the natural colors of the landscape well, with no particular variations, but with a nice difference from the shots taken without a filter. Even using it at maximum intensity (ND32) works well.
What I liked from the start was the build quality of the filter, the frame is made of aluminum and the optics are made of durable glass, already holding it in your hands it makes a good impression.
The moving frame shows the main densities N2 and N32, the other densities N4, N8 and N16 are shown with white dots. To indicate these densities, there is a special arrow on the fixed frame (the one that bolts to the camera).
The rotation of the filter stops when the maximum and minimum point is reached, ie N2 and N32, does not rotate indefinitely and is practical and avoids the typical X effect in photos.
For the rest, it's a fun filter, also to take shots that get the typical silky effect on waterfalls, sea and clouds. Of course you have to make the right settings for this type of recording.

SHIPPING: kentfaith
dispatched as always accurate and timely and deliverable in compliance with social distancing.

CONCLUSIONS:
From my experience I am very satisfied with the results of this filter, it will surely be a great travel companion to carry with me at all times.

I needed a filter to do long exposure, my choice is based on this one and here is vis de vis de la brand, here is my opinion:

- the +:
Adjustable!
No cross, distortion or image distortion
Comes with a storage box
Easy and convenient to use with precise adjustment through the ring, very progressive for video.
Very good quality.

- The -:
New, the adjustment through the ring is a little tricky, which can lead to unscrewing the device's filter instead of changing the brightness.
It is necessary to think about changing the temperature of the paint when using it.

Conclusion:
With a very good quality/price ratio and very satisfied, I highly recommend it if you are looking for an ND filter.

No X-Cross to be found in any setting. Solidly made, price was ok.
Only the filter thread cannot be screwed on comfortably, it hacks very easily. I can't see a color cast. Unfortunately, the ND range with ND32 is relatively tight, the desired effect did not appear with my camera.