I recommend this brand for cheaper ND filters that are of high quality. I am very pleased with the value of this product and how it fitted into my camera gear setup.

Product: 58mm Variable ND2-ND32Description: The rim of the filter is made out of what I'd assume is aluminum, coated matte black, (which has a nice weight to it, and has hard stops at ND2 & ND32). The rim itself is actually fairly nice. It's easy to put on, and easy to take off due to the wide ridged design around the base of the filter. The high index optical glass is indeed nano coated to protect against water/oils from fingerprints, rain, & etc. Which are easily removed without struggle in my testing with a clean micro fiber cloth (not included). The glass itself has a slight yellow tint to it (which you can see from the photo comparison), which can also easily be corrected through your cameras auto white balance, or lightroom. The filter also doesn't loose to much detail if adjusted properly which is nice as you will see from the photos, and their description in the next section.Photos: The first four photos of the product were taken without any filters. Though the next two of the black & red mouse pad were to show detail comparisons. These two photos were taken about 1-2ft away, but are cropped to show detail. Which were slighty adjusted to be as equal as possible.Without the filter: F4.0 1/15s. ISO 400ND32: F4.0 1s ISO 400The next 6 photos of the flowers next to the bird bath were taken without adjusting any settings to show the darkness of the filter (F5.6 1/320s ISO 100), in this order: No Filter, ND2 1st, 2nd, 3rd, 4th, & ND32 5th stop.Overall: The produce works well, and is well made! I would highly recommend picking one of these up, along with a circular polarizer. Though only notable things I found with the product is that it has a slight yellow tint of the filter, the front thread size of the filter in bigger then 58mm, and the top of the filter very slightly wiggles. Otherwise it gets a solid A from me!Extra: I used a 49mm-58mm step up ring for the filter to fit my Canon 50mm F/1.8Camera/Settings: Shot on a Canon Rebel SL3, with custom white balance settings set to +/-0,+/-0 for raw color quality.

A good ND filter, it has a tone that for me, I like the effect it leaves on the shots.

I’ve wanted to use an ND filter to achieve some long shutter, waterfall effects and motion blur of clouds in landscapes on my Lumix FZ300 bridge camera. K&F Concept filters appear to have good reviews and are priced competitively for the hobby photographer. I bought this one when a $10 discount was offered. I recently bought the K&F Concept 52mm MC UV Protection Filter with 28 Multi-Layer Coatings HD/Hydrophobic/Scratch Resistant Ultra-Slim UV Filter for 52mm Camera Lens and it is a great filter. So, I took a chance on this K&F Concept 52mm Variable ND Filter ND2-ND32 Camera Lens Filter (1-5 Stops) No X Cross HD Neutral Density Filter with 28 Multi-Layer Coatings Waterproof (Nano-X Series)..This 52mm filter comes in a huge plastic case. Clearly, a common case is used by K&F for all filter sizes, but these are too bulky to carry in your camera bag for just that small filter, especially if you have several. I’m going to have to find more appropriately sized cases..The filter itself is manufactured to a very high quality standard. It threaded on first time, and smoothly, to the K&F UV filter, which I use purely as protection for the camera lens. The filter also screws off easily with no sticking. The knurled filter body is easy to grip for that. There are stops at both minimum and maximum ND positions. Often, the maximum setting does not have a stop..I did see a distinct yellow color bias in my testing. It is slight enough that it will be easily compensated for in photo post-processing, but more problematic with video. There was a small amount of uneven gradation as can be seen in the deck floor. No significant X-pattern though at the extreme ND32 but some vignetting on my FZ300 at the widest, 25mm focal length. My sensor must be offset as the dark corners are only in the left corners. The clarity of the image was not noticeably affected by adding the ND filter. I initially thought the image of the rock in the creek was soft, but the camera had auto-focused on a different area between shots. I didn’t use manual focus! Other images do appear sharp, sharp for the FZ300's 1/2.3 sensor anyway.The landscape photo was initially without the ND filter, just my UV and camera-metered exposure (f4, ISO 100, 1/160s). Then, I added the ND32 filter and retook the shot (f4, ISO 100, 1/20s). So, the ND filter is actually reducing 5 stops of light. 😊 To avoid the uneven shading, especially noticeable on images with little detail, you might have to dial back to 4 stops.The creek images were taken at ND2 and ND32 in shutter priority, adjusting the speed to its slowest until the exposure was just accepted by the camera. At ND2, I was at f2.8, ISO 100, 1/500s. At ND32, I was at f8, ISO 100, 1/5sec. The FZ300 aperture range is f2.8 to F8, with a crop factor of about 5.4 and ISO 100 minimum. In this case, the uneven shading was imperceptible.The creek was just a rippling stream, but the effect on the water is obvious. I would aim for a 2 or 3 second exposure time for a waterfall. In such bright, mid-afternoon conditions, ND32 is not enough to achieve the effect I need at that time of day. I’ve ordered a K&F Concept CPL/ND1000 combo kit to see how that works, either on their own or in combination with this variable ND filter. However, the ND2 to ND32 filter is going to work well in the evening. I will just have to crop out the vignetting..My 52mm Lumix lens cap actually works on the filter, despite the actual need for a 55mm with the front end design of this 52mm filter. It's not a perfect fit, but it does stay in place.NOTE: You cannot stack another filter in front of this VND filter - no thread! Another has to go behind first..CONCLUSION:.I was half expecting to have to return this filter, based on some 1- and 2-Star reviews. However, it’s a keeper. It is well-made, works well, is 5 stops, but does show some uneven gradation at the extreme ND32. You might also get some vignette below 30mm focal length, especially if filter stacking.This will be a useful addition to my camera accessories, primarily for mild light control in extreme sunshine. It just isn't quite strong enough for a good waterfall effect in mid-afternoon sun on a Panasonic Lumix FZ300.I can certainly say this $50 variable ND filter is good value for general light control, if you can accept the yellow bias and the slightly uneven shading at the full ND32 in smooth scenes.

Highly recommended. Great filter for the price. Awesome build quality. I have several different sizes

I use this variable ND filter on my Canon L lenses as well as magnetically mounting via a DIY adapter/step-up ring to my iPhone 15 Pro Max for MUCH IMPROVED video and photos.As a photographer and videographer for over 40 years, I've used a lot of different filters and I can attest that this variable ND is extremely hard to beat, espcially at the price I paid for it.

Increíble producto la calidad de sus cristales es increíble no te genera la famosa viñeta, solo que a veces se siente un poquito flojo al ajustar los pasos pero la verdad es que por su precio y calidad está increíble súper recomendado!

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Great when its an extremely bright day really helps to clear the image and darken it.It comes in a protective case and good packaging. The grip on the sides of the filter is great and made of good quality material. Its adjustable and works well when adjusting.I use my black mist filter more but this one is very handy as well.DONT make the mistake I made and buy one that fits one your lenses with a small diameter, make sure you buy the one that fits your largest lens and you can use step up rings with your smaller lenses in order to save money. I bought this one for my RF 50mm lens and its tiny and wont fit my other lenses.

I needed a new ND filter and after much research I decided this was the one! The reviews were mostly favourable and I wasn’t seeing a whole load of “stuck on lens” comments, although for those that have got filters stuck I assume they’ve tightened them up way more than they should have!The lens comes in a plastic box unlike its larger siblings which come in a faux leather case that feels a lot nicer, so that’s a minor downside, if you don’t pay attention you could potentially open and have the filter fall to the ground, just be careful and don’t get distracted while opening!In practice it works fantastically well, the movement through the ND range feels very smooth and feels like you’re moving something that is well engineered, and crucially there’s no X like you can get with some filters.I’ve used it in winter sunshine and have had no issues, the range of ND values has been sufficient, it might be interesting to see how it fares in the blazing summer sun, but I’m a happy customer with it currently.As with all things optical, it’s not cheap but it’s also not outrageously priced, a little cheaper and it would be firmly into the bargain category but I think it’s slightly too high, so it’s a neutral feeling on value for me.That said, I bought a larger one for my 78mm lens based on how good this one felt and spoiler alert, the 78mm is just as good! I may just buy some adaptors in the future so I can use a larger filter on a smaller lens and then have everything covered with single purchases, but for the moment this will do!