K&F CONCEPT 77mm Variable ND2-400 Lens Filter (1-9 Stops) for Camera Lens

I've been very impressed with this item for the past 2ish years. It's been a durable design at a very affordable price. It fulfills everything that it said it would and is easy to install and use. My images are still very clear and not cloudy as I use the filter. It makes a huge difference in my image using this filter to help reduce the harsh light coming into my camera. There is a slight vignette on the image, but not drastically noticeable. The only downside is the lack of gauges to keep track of what stop the filter is at. It requires you to watch the LCD screen as you turn the knob on the filter. Still happy with the product, but wish there were numbers on the filter. Overall, highly recommend, especially for the price!

Works great I use it with my Sony Zv-E10. Easy to install.portable lens's cap nice case. Fits perfect in my case. Perfect compatibility. Wish it had a lens cap to keep it covered when moving around.

Nice ND filter that gets the job done. It provides a useful range of light reduction, making it easy to control exposure in different lighting conditions. It’s straightforward to adjust and works well for both photography and video use when you need to manage shutter speed or aperture in brighter environments. Image quality is solid for the price, with no major issues in normal use, and it mounts securely to the lens without problems. Overall, a reliable and practical variable ND filter that performs well for everyday shooting needs.

I wanted to try a ND filter, but I wasn't sure if I'm ready to spend more than a hundred for it yet, and I found this low price filter, I really like how the photo came out, no compliant!

As an intermediate photographer thats most of the time on a budget Ive found this company to have some good quality stuff for a fraction of the price most big name brands sell them for. Ive so far oreded a few items from K&F CONCEPT and I got to say their product is really good so far. The lens filter is just as described and I love the matt finish of the material used. The material used feels high quality and feels really durable all for a good reasonable price! Its not too heavy very light weight and was able to install on to my lens with no issues. Now there is plenty more positive things to say but, I just have a couple of things that I found personly disappointing/annoying when using the lens filter. Cons: 1. The lense filter sits properly but you loose the ability to use your lens cap. Id have to remove the filter and place lens cap where as other filters I was able to keep on my lens and still place the cap on. 2. The dial to choose how much of the ND filters to use just continues to spin I feel like when shooting having to continuously look where im setting it too will become tedious. Id suggest having stoppers when reached max or min and to possibly have groves to feel what setting im on like slight click in between each "setting". But thats just me being annoying and picky lol. Aside from the "negative" opinions I will be buying more products from this brand. As it is I am currently waiting on a lense cap with UV filter for one of my other lens and I cant wait to receive it.

Fine for time lapse; not sure about color fidelity for other work.

This ND filter is a fantastic addition to my photography gear! Made from high-quality AGC optical glass with 8 multi-layer coatings, it really reduces reflections and glare, resulting in crystal-clear images. The 1-9 stop light adjustment is incredibly versatile, perfect for everything from bright daylight shots to more controlled, low-light scenes. The 360-degree rotation offers precise control over the light reduction, although, at the highest stops, I did notice a faint cross-pattern ("X" effect), which is typical for adjustable ND filters on some lenses. The filter itself is sleek and slim, just 7.4mm thick, and the CNC-patterned edge provides great grip, making it super easy to attach or adjust quickly. I love the anti-glare finish, which minimizes stray reflections, especially in challenging lighting. One thing to note: you’ll need a 55mm lens cap for this 52mm filter, but that’s easy to work around. Overall, it’s an impressive ND filter with outstanding performance and durability. Highly recommend it to anyone looking to improve their outdoor and landscape photography!

I'm just a novice photographer, with limited experience using filters. That being said, I know my way around exposure settings and fairly literate with the technical specs of my cameras. I wanted to take some smooth pictures of waterfalls and saw this variable ND filter with good reviews. On the item description page, there's plenty of warnings to make sure you buy the right filter thread size for your camera, which seems pretty obvious. However, they don't mention that this ND filter is poorly suited to wide angle lenses. For reference, I had paired this filter with a Zeiss Touit E 12mm f/2.8 mounted on a Sony a6500. After coming back from vacation, I realized that many shots I took with the filter mounted had pretty poor light uniformity. I did notice while taking the photos that rotating past a certain point produced noticeable unevenness, but the effect was less/not noticeable when I turned the ND down. However, upon checking the images on a computer monitor, it was obvious that the brightness is not uniform. I asked the seller about the issue and copied/pasted their response below: "Darkness is a common issue with wide angle lenses and variable ND filters. Physics limit the capabilities of variable ND filters on wide angle lenses. When you enter the edge of the max range,the darkness may appear on your image. Because you are using it beyond its capability according to the laws of optical physics,which will inevitably cause this phenomenon. could you try to turn down the degree until the black fade away?" So I guess I'll chalk this up to inexperience on my end. Still, I'm docking 2 stars because it's not documented anywhere on the item page which focal lengths are supported, which can lead to some mislead some buyers. Also, it's not really feasible to tell if there is a slight amount of uneven brightness while taking the shot or previewing in camera. Thus, you can end up with a bunch of bad shots that you wouldn't know about until you get back to a monitor.

The quality is great and it's exactly what I need for my zv-e10 kit lens.

It has got just about all your required settings. Ultimate & Optimum useful filter.

I ordered the 52mm filter because the 30mm f1.4 sigma lens for sony e-mount cameras has a 52mm thread but after lens arrived, I couldn't fit it on. But after-service support was pretty helpful in telling me this

Ottimo filtro a ND variabile io l'ho montato su un obiettivo Sigma per Lumix e per le interviste è perfetto non distorte assolutamente l'immagine

初めて使うのには良い商品かも。 場所に合わせて調整出来るのも良いですね。 もっと早く買っとけば良かった。調整が簡単なのが良いです。