I'd heard of K&F concept before and first tried one of their circular polarizers. I went out and shot some sample photos with it to compare with my expensive filters, which I apparently cannot name, because my review of the C-PL in which I named them was rejected. Let me say here that the K&F C-PL impressed me. I thought the shots with my other polarizers that cost four and five times more than the K&F were the K&F shots, because they weren't as good. But I was wrong; the K&F shots were the best. I didn't take these NDs out for comparison, but I did use them to shoot the recent annular eclipse. I got some great shots using the ten-stop filter. No glare, no flare. Since I was bracketing my exposures, and since I had plenty of time, I tried stacking two NDs, the 1000 with the 64, and got a fair amount of flare. I'm not surprised, and I don't hold it against the filters. I know better than to stack them and I'd never do that in any other situation. With either the ND1000 or the ND64 mounted I had no flare. I bracketed exposure to get a decent foreground in some shots and a decent crescent sun on others to later combine in post processing. When I bumped up the exposure for the foreground, the sharpness and color were perfect -- you'd never know there was an ND filter in front of the lens. I expected there to be at least a slight color cast, but there was none. A cast wouldn't bother me, as I shoot RAW and process my own photos anyway, and this is exceedingly easy to correct. The cost of an ND, right? Nope. Not with these. I wholeheartedly and without reservation recommend these K&F ND filters. While I'm at it, I even more strongly recommend the K&F Nano-X series C-PL, a circular polarizer that outperforms my others that cost 4-5 times more.

I've said it before and I'll say it again. but K&F Concept is one of my favorite bargain photography brands. They make good quality things and don't charge an arm and a leg for them. I love photography, but I am not the type of person to pixel-peep and I don't need the absolute best image quality for paid photo shoots. I take pictures as a hobby and these filters are great for that. Are they as good as other more expensive brands? I have no idea, but I do know that for about $50 this is a great set of ND filters that will help you take better pictures in certain conditions. Research ND filter photography and then buy these if you have an interest in how they can help you.

recently "moved into" a new camera system, and the largest filters I had, 77mm, don't work in many of the lenses, which use 82mm. So, I'm having to re-filter for these new lenses. My work with this camera is mainly landscape, and along with a good polarizer, ND filters are where I tend to go. I wrote an earlier review, comparing these to some top-line filters I have (but in smaller sizes)—but that review was rejected, and the only reason I can think is that I mentioned specific brands—so I won't try that again. Basically, from my tests, which only looked at how even the light transmission was and how neutral the longer exposures looked by eye, these K&F Concept filters are as good as you could ask for. Looking at multi-coatings and reflections, the exterior of these filters was on par, if not better, than the high priced filters. That said, the rear (interior) surface on the more expensive filters was much less reflective (than even the fronts were!) whereas on the K&F filters the front and backs are about the same, in terms of lessening of reflections. The filters come in a very nice case. I'd be happier with it if it was maybe a bit less padded—my bags always seem crammed. For me, the main difference between these and the top line filters are the rings. All three rings threaded on smoothly. No complaints. But if you're used to the way that nicely machined brass rings screw on, you'll know what I mean. I'm quite happy with these.

think this is a bargain deal, for what you get. I also think I'm a little spoiled with magnetic stackable filters, to where these aren't quite as exciting for me as they used to be. But I can say that, if I were buying my first filter set, or if I was just used to screwing filters on. Or, I was trying to save money, or simply couldn't afford more expensive filters, I would call these a 5 star experience. I saw another reviewer mention their being aluminum, and having a tendency to bind more than other materials. I've had that problem in the past, but not with these yet. Just something to keep in mind. Try not to tighten them too hard, and I've never done this, but I imagine it's a thing... I bet you can very lightly lubricate them somehow, being careful not to get it on the lens. Don't quote me on that, and maybe consult your doctor, lawyer, psychiatrist, professional photographer before attempting such a stunt. Other than that, you are getting what you pay for here. I love K&F, and love the effect of their ND filters for glare and contrast, and a much more cinematic/professional look to your content

These ND filters are exactly what I was looking for. Reduce light intake by 3/4/10 stops, a good variety for almost all use cases. Screw on tight and well. Even and no distortion in output. They come with a great carry case and 3 microfiber cloths. Great buy! Highly recommend.

This is not my first K&F product, nor will it be my last. This brand does a pretty good job of nailing the quality / price value. Their are obviously brand that offer better quality but they will often come with much higher prices. I ordered these filters so I could set longer exposures for my shots at the bay area coast, and they have worked well. I appreciate that these come with a nice durable case . Definitely worth picking up.

This is a three piece neutral density filter set to reduce the amount of light entering your lens. The filters have different densities to achieve varying amounts of light reduction. Think of them as light, medium, and dark. The set comes equipped with a nicely made filter wallet (gray fabric with leatherette trim). In addition, in the box you will find three microfiber cleaning cloths in vacuum sealed bags. It is an impressive and nicely presented package. How do they perform? These filters are very light and thin. In your hand they feel like you are holding nothing. Screwing them on they feel okay: the threading process in not super smooth, but not too rough. I would rate this as average. Between using no filter and using the darkest one, I measured the difference at about six f-stops, or a six fold reduction in light transmission with the darkest filter. And the color looks neutral throughout the test. I think the filters performed quite well.

While I got it through VINE, I would still say that this is a very nice quality lens for the actual price! I have only taken quick test shots, but it seems to do what it is supposed to do. I am still getting used to the different ways to creatively compose my photos, but liking what these ND filters can do!

These work perfect on my Sony 18-105. They are a must in sunny weather especially here in super SUNNY south Florida. I can keep my aperture wide open when i need and get those beautiful portraits. If you live in a sunny area these are a must have.... MUST HAVE.

Very good filters. The storage case is really very practical for protecting them.