KV37 82mm Fader Variable Adjustable ND Filter ND2-ND400 - Ultra-Slim & Multi-Coated Nano-Klear
SKU: KF01.1393
I have used numerous filters from Cokin, buying several for different size lenses. And I do a serious amount of light and strobe painting (do a YouTube search if you're curious). So when I dropped my super expensive ND filter I was devastated! Until I found this K&F Concept ND that offers a "Variable Neutral Density". Imagine buying an ND filter for the typical four hundred dollars (and that's only for a single fixed ND number)? Oooor, grab this well constructed, high quality ND filter that you can tune to your liking ON THE FLY! I still think...
Buy it Bonehead!
Buy it Bonehead!
11/02/2026
I have several different sized lens and several different brands of filters. Most are in this price with a couple less expensive and a couple of high priced premium brand name filters.
The majority of my filters in this price range perform like a lower priced filter. Some don’t quite fit on the lenses the way they should, some feel tight when I turn them, and most just don’t perform as a neutral density filter should.
This particular filter surprised me by surpassing my expectations. It feels solidly built. It looks good. The glass looks fine, and you can see it darken as you turn the lends. It’s waterproof, which is a nice touch!
I usually try to give a list of pros and cons in each of my reviews, but this lens filter seriously gives me nothing at all to give as a “con”. I will be buying additional filters from K & F. I see no reason to even try any others at this point.
I hope you have found my review to be helpful!
The majority of my filters in this price range perform like a lower priced filter. Some don’t quite fit on the lenses the way they should, some feel tight when I turn them, and most just don’t perform as a neutral density filter should.
This particular filter surprised me by surpassing my expectations. It feels solidly built. It looks good. The glass looks fine, and you can see it darken as you turn the lends. It’s waterproof, which is a nice touch!
I usually try to give a list of pros and cons in each of my reviews, but this lens filter seriously gives me nothing at all to give as a “con”. I will be buying additional filters from K & F. I see no reason to even try any others at this point.
I hope you have found my review to be helpful!
10/02/2026
I love K&F ND filters. I don't know if I will ever buy another brand of filter again. This is the third K&F ND filter I have purchased and I have been very happy with all of them.
I've bought filters ranging from extremely cheap to extremely expensive, and these are honestly my favorite filters I've ever used. They are high quality, easy to screw on and off and very easy to adjust.
I've bought filters ranging from extremely cheap to extremely expensive, and these are honestly my favorite filters I've ever used. They are high quality, easy to screw on and off and very easy to adjust.
10/02/2026
I've read reviews for other ND filters and found that for the price this one works great for what I'll be doing. The build quality is really good, it has some weight so it feels strong, the glass is really clean and it works perfectly, I got it for my 35mm 1.8 and it allows me to take pictures and videos at full Daylight to make wide aperture of 1.8 with an even balance of blues in the sky to the greens in the grass. I was really impressed with the quality of this filter. I will get another one for my 50mm 1.8. I use it for midday exposures of waterfalls and cloudscapes. This also helps achieve a cinematic look for video footage that looks really good! I didn't notice any noticeable loss of detail in pictures or videos, which is something I was concerned about. I noticed NO type of X or shadow from this filter. It's probably due to using a wide-angle lens. I highly recommend this ND filter!
09/02/2026
I have used this with 2 different lenses. It sticks well to one and is a little rough but works with the second. I have a feeling this is more a difference in the lenses than the ND filter. It's easy to use while moving between differently lit areas. Good product!
08/02/2026
I'll start by saying that I'm no expert. Most bad reviews are due to people not understanding that these adjustable filters are not meant to be used to their full capacity. Any filter will start to give problems when pushed to its maximum. First, just practice with this filter and know its limitations. You will be a happy customer if you do this.
08/02/2026
The first thing I noticed about the K&F concept 67 millimeter variable ND filter, is that it was packaged super nice, and when I picked it up out of the box it felt like a quality product. It had a super nice metal finish and the two pieces glided across each other very smoothly. This was my first time using an adjustable ND filter on my camera, but I was always looking for the extra versatility and adjustable ND filter could offer versus a fixed ND filter stuck at one particular stop.
This variable ND filter definitely did not disappoint, I love how easy it is to slap onto my lens and it's so great being able to switch and adjust the power of the ND filter with a simple twist of the lenscap. In addition to its obvious uses an ND filter, I love the fact that I feel like my lenses are more protected when this is on them as well because the glass is not exposed to the elements. Overall, I am definitely convinced about using ND filters and adjustable ones more specifically, so I would definitely recommend this to anyone who's on the fence about getting an adjustable one. This one definitely does the job.
This variable ND filter definitely did not disappoint, I love how easy it is to slap onto my lens and it's so great being able to switch and adjust the power of the ND filter with a simple twist of the lenscap. In addition to its obvious uses an ND filter, I love the fact that I feel like my lenses are more protected when this is on them as well because the glass is not exposed to the elements. Overall, I am definitely convinced about using ND filters and adjustable ones more specifically, so I would definitely recommend this to anyone who's on the fence about getting an adjustable one. This one definitely does the job.
07/02/2026
If you plan on filming something outdoors then this is a must have, which makes it even better for such a low price. I've only used it a couple of times so far, but I haven't noticed any major issues with the footage I've shot with my A6500 and 18-105mm lens. If you have multiple lenses you want to use these with, I would suggest step down rings.
The only thing that could be improved would be if it had some sort of marker showing which stop you are at. At the moment I'm judging by the screen, but it would be nice to know exactly which stop I'm at.
The only thing that could be improved would be if it had some sort of marker showing which stop you are at. At the moment I'm judging by the screen, but it would be nice to know exactly which stop I'm at.
06/02/2026
This filter works perfectly for me and I am very happy with the results I got while using it. It is worth noting that the size of lens cap you need once it is fitted on your lens increases. I bought the 49mm and had to increase my lens cap size to 52mm to accommodate the larger thread size on the front. This wasn't a big deal though as I already had a 52mm lens cap lying around. There is a size chart on the company's website that tells you what size lens cap you need based on what size filter you buy. Hope that helps
04/02/2026
I wasn't sure about the variable fader, fearing it wasn't powerful enough.
Outstanding quality and performance, easiest handling. Took photos of partial eclipses and even direct sunlight. A simple twist adjusts the brightness from almost completely transparent to pitch black. Never seen anything like this.
This is a must have for creative photography. Arrived quickly.
Outstanding quality and performance, easiest handling. Took photos of partial eclipses and even direct sunlight. A simple twist adjusts the brightness from almost completely transparent to pitch black. Never seen anything like this.
This is a must have for creative photography. Arrived quickly.
03/02/2026