I like the fact it's sturdy and well made . It's easier to remove than other filters.

For the price , I'd say it's a very nice alternative to much more expansive filters. It's kind of an in-between suitable for most of scenarios . Instead you have very very high quality lenses on which you put this filter ... it normally won't lower the image quality or degrade it.

I use it on a Nikon Z6ii camera with some lenses and love it. As far I didn't see a drop in performance instead we much watch a bit more the focus system as it's not a Nikon filter made for Nikon , it's more generic and sometimes ... it can trigger a bit of bad auto-focus if you rely a lot on it. It may be normal so I don't care a lot and in a lot of cases like mine , we're using an external monitor like Ninja V to verify our focus before the shot.

I recommend it . It's a fair alternative to a lot of expansive brands and the coating on it seems to be real . A lot of low cost filters pretend things that are false regarding the coating or other aspects . It doesn't seem to be the case with these K&F ones.

Give a try ... frankly for the price .

It's a perfect filter with a case. A real pleasure

I was afraid I would have problems being a variable ND with rare effects, and zero problems. Neither on the corners, nor at ND400, the truth is that a pleasant surprise for its price. It may have a little green tint, but with a correction of nothing in the Premiere I fixed it, between 5 and 10 points on the dye tab towards magenta and you're done. Highly recommended, you just need to have a cap like the ND2 and ND32 models that are the ones I usually use.

K&F has delivered again, good value for money. I was looking for a good quality variable ND filter for my lenses and this one does the job. I bought the largest size. Got a nice tote bag. Image quality is great.

All reviewers say that the feel of this filter is top notch, but some seem disappointed with the functionality. Maybe I'm just lucky, but the finish and precision is spot on. I've bought two of different sizes and both have great quality and well aligned polarizers (the elements that make it go nighty night), this means that there is no problems with the "cross shadow" (XS). Now, that's a lie! There will always be an XS at some point, but for me this was just before the 8th (last) stop when using it on a wide lense (16mm APSC). Which means that almost the whole range is usable, all that you can ask for with an variable ND filter.

Quality, Glass, stop selection. Excellent filter optically superior, image quality, and light control superb.

K&F Concept is synonymous with quality. I already had other filters in kit, albeit quite old and with several years of service behind me. By virtue of my imminent photographic journey, I decided to opt for something new, always relying on them. I will tell you in detail what, in my opinion, are the pros and cons of this new product of theirs.
First of all, the packaging is really great: the box is made of very strong cardboard, impossible even to fold, and then the magnetic opening is very pleasant. The filter is stored in a leatherette case with magnetic closure and not plastic, which gives the product a finish that we can call 'premium'. Inside, wrapped in a protective bag, the filter. It is a fairly heavy piece, already to the touch it gives a great impression. The body is made of aluminum, the glasses are of excellent finish. Very thin (and this is good because this reduces any loss of sharpness), waterproof and scratch-resistant. Very pleasant (and very useful!) the orange little thing you need to change the intensity of the filter itself: the only drawback is not having a limited stroke during rotation, but it's not a big deal, since the limitations ND2 and ND400 are indicated right on the end of the filter itself. In any case, the filter was built in such a way that, even if you go beyond the limits, the annoying 'X' shadow does not show up. For the time being, I had the opportunity to try it only in the city on a somewhat ugly day, in the coming days I hope to integrate this review of mine with other shots in the mountains.
Who is the filter addressed to? Surely for those who love landscape photography or for those who want to do long exhibitions in the city (remaining within the limits of 9 stops): of course, the product is not the cheapest on the market, but that's enough try it for a while to understand that it's worth every penny you spend. I'm not a photography

very good quality filter. fits my nikon lense no problem. very easy to use. the rotating filter is quite stiff so can be adjusted accurately and it wont get adjuested accidently. im not a pro but the image quality looked good to me.

I haven't tested the product yet, but its' very good 'appearance

seems to be very robust

Very surprised by the quality of the filter, it's from the professional nothing to say. The materials are good and the glass super. The adjustment wheel is very smooth and makes it easy to change the density of the filter. No need to have 4 different filters. possibility to shoot video in full day at the largest aperture. I love it!
It also comes with its small carrying case which is very sturdy and makes it easy to carry without fear of scratching