I have a ProMist 1/4 and 1/8 diffusion filter, but I was intrigued by this combination ND and diffusion filter and wanted to give it a try. As a point of reference, a ProMist 1/4 will set you back $150 and a similar variable ND another $150, so your getting a great deal for $109 for both. But it's only a great deal if the quality is similar, and I'm happy to report that it is. I shot test footage using the ProMist and this K&F filters under the same lighting conditions with the same camera settings and then watched them back on a 4k monitor, and I couldn't see any discerbible difference in image quality. In using the variable ND, there was no telltale X pattern common to less expensive filters, and I really like the fact that the f-stops are marked on the edge of the filter ring (but they don't "click" into place like you'll find on more expensive filteres). SInce I'm frequently using a diffusion filter and a variable ND filter at the same time, to have them combined in a single filter is very convenient. I now have six K&F Filters, and I'm consistently happy with their quality. The price to value ratio for this combo filter is excellent.

Ett solidt variabelt ND-filter. Filtret är bearbetat riktigt bra och den övergripande passformen och finishen är utmärkt. Den orange anodiserade fliken ser riktigt bra ut och tillför en snygg estetik förutom att hjälpa till med justeringen. Urtavlan är tillräckligt jämn för att inte skruvas loss från linsen men är tillräckligt stadig för att inte glida när den väl är på plats. Alla bilder jag använde ND-filtret på bekräftade att filtret är bra för mellan 1 och 5 stopp och jag fick aldrig några konstiga mönster med någon av inställningarna. Det finns en liten färgskala som lutar mot blåaktigt som liknar alla andra ND-filter jag någonsin har använt men det är lätt att fixa i posten. Våren kan vara oförutsägbar och det kan vara en enorm smärta att byta filter mellan molnen. Ett variabelt ND-filter är bekvämt samt att minska antalet bitar att ta med fotografering. Påsen/hållaren är snyggt gjord men skrymmande. Ett mer kompakt hårdfodral skulle vara att föredra, men det är ett bra tillägg till den här prisklassen. Ibland önskar jag att filtret hade någon form av klick eller stopp vid de olika hållplatserna, men totalt sett är det inte ett stort problem. Det skulle vara trevligt att förinställa stoppet på detta sätt, men inte en deal breaker. Sammantaget är bildkvaliteten bra och K&F ND-filtret är ett bra köp till prisnivån. Den har mindre färgskiftning än andra billigare filter och fungerar investeringen.

Nice filter. Definitely useful in certain situations. Great for sharp lenses, especially those lacking character. That brings some mood. It's nice to have, looks good and I love that I can put it on a lens and still use the lens cover over the filter when not in use.

This polarizing filter and neutral density filter pleasantly surprised me, it is not overpriced and the quality of the photos is not bad at all, I have taken several photos with the different degrees that it allows to subtract light and the result is good, if you like silk effects in the water this is an essential filter.
It also has the polarizer that eliminates reflections on crystalline surfaces.

The filter arrived neatly packaged. The feel is good so far, it feels valuable. I didn't notice color shifts negatively.

The filter comes in a plastic carrying casing with high quality foam to protect it. The filter is a tight fit in the case so you can be sure once stored it wont move around or get damaged during transit.

The filter itself feels to be of good built quality with metal frame holding the glass in place. I like the lever to adjust the stops, the action is smooth and will not move on its own. I would have preferred if K&F included a lens cap just in case, I wanted to leave the filter on the camera.

Considering the price, the image quality is comparable to high end products. I found the image quality to be excellent as I did not notice any chromatic aberration, loss of definition or the dreaded X from graduated filter.
You can see some product and some test images I did at home to test the product. I hope you found this useful, if so, please vote positive below

This K&F Black Diffusion Filter is an excellent kit. It reduces the contrast, makes the blacks a bit grayer and provides a soft bloom around the highlights. Four filter strengths are available; from weakest to strongest they are 1/8, 1/4, 1/2 and 1.

Super filter and cheaper than competitors.

Similar to the expensive Pro-Mist filters, this gives videos and photos a more cinematic glow as it adds a slight haze to the image. The filter gives the highlights a fog-like effect without sacrificing sharpness and also smooths out skin tones. Overall nice filter that fits and protects the camera and is best to have than use a cheap UV filter. The glass won't stick to oil or fingerprints, so you don't have to keep wiping it down.

Ideal for outdoor shoots in the morning or evening when the sun is low