The K&F Concept Circular Polarizer and Neutral Density Filter offers the convenience of two quality useful filters in one, at a reasonable price.

The neutral density filter provides between 2 to 6 stops of light reduction, more than enough when wanting to slow your shutter speed for video or specific type of photography, like waterfalls.
Similarly, the circular polarizer removes glare and enhances color and contrast.

Although the filter did not come with instructions, using it is easy, and the outer rim of the filter is clearly marked to indicate the amount of light reduction. Turning clockwise changes ND levels, and counter clockwise is the circular polarizer.

The rotation of both the ND filter and circular polarizer is smooth and even, and the frame, which is made of aluminum alloy, is well-machined and screws easily into the lens. Overall, the filter appears very well made and it even comes in a very nice (leather looking) carrying case.

Bottom line, this is a very useful and convenient filter to have in your kit. Content creators of all types, video and photos, will appreciate the ability to reduce light for video and different types of photography, and increase contrast and color vibrancy.

Highly recommended!

Picked up this 100000ND ND Filter ahead of the upcoming solar eclipse. I tested it out a bit on a bright sunny day with the sun high in the sky. I was able to capture the sun with ease. It's going to take a few more times to get it dialed in as I've never shot with a 100000 ND filter before I ordered this. The build quality on this is top-notch. It comes in their new round filter case so I know it's safe and sound which is good because I know I'll be ready for that solar eclipse. K&F makes some of my favorite filters. I don't find much if any color shift. They are a high-quality filter at a good price. This is a niche filter so spending a good amount of money on a filter like this would be crazy. I think K&F filters allow you to be able to invest in a good filter without breaking the bank and still giving you an awesome look and high-quality images.

A solar photography must have.

I had never owned a K&F Concept brand filter before and was pleasantly surprised when I first used it in my landscape photography. The reverse graduated ND filters from the popular brands of photographic filters tend to be quite expensive, and this one in particular is less expensive and produces results equal to and even better than those of the most reputable filter brands. It is made of glass, which is an advantage over resin filters because it does not scratch as easily. I really liked the filter cover, which is made of leather with interior protection. In short, I liked this filter very much and I am sure that I will use it very often in my landscape photography.

I had never owned a K&F Concept brand filter before and was pleasantly surprised when I first used it in my landscape photography. The reverse graduated ND filters from the popular brands of photographic filters tend to be quite expensive, and this one in particular is less expensive and produces results equal to and even better than those of the most reputable filter brands. It is made of glass, which is an advantage over resin filters because it does not scratch as easily. I really liked the filter cover, which is made of leather with interior protection. In short, I liked this filter very much and I am sure that I will use it very often in my landscape photography.

The ND filter is also very correct. It allows us to take long exposures when the light is too high, allowing us to capture large water shots with a silky effect or clouds in the sky that leave a "wake" and give a sense of movement.

In short I think it's a 100% recommended kit if you're a fan of photography or just starting out like in my case.

I was given this filter by K&F concept to review, but this is my honest review based on using it for a few shoots of both photography and videography. The filter comes in a really nice plastic protective case, also included is a cleaning cloth in a pouch. The cardboard box itself is sturdy with a magnetic opening. I asked for the 77mm filter to fit my biggest lens and got some step up rings so I can use this on all my lenses and by stepping up you wont get vignetting. The filter itself feels very good quality and well built, the exposure adjustment ring allows you to choose between five stops, it feels like a fluid video head and will not move on its own. I didn't witness any colour shift, or any photo or video issues using this filter, also there was no sign of the black X some filters show when the two optics cross at their maximum point. I would definitely recommend this variable ND filter, its at a very good price point and by using step up ring for around £10 you can have this one filter work on all your lenses, that is a lot cheaper than a few sets of ND filters when your lenses have different sized filter threads. Using this on video at either 25 or 30 fps using shutter speeds of 50/1 or 60/1 this filter easily cut down the light to stop my footage being over exposed. I have added a review on YouTube and video demo, you can find this by searching youtube for this product description.

Since I discovered photography as a new hobby, I was looking for different filters. With this ND filter, you can turn day into night and thus make long exposures during the day and at dusk. By manually adjusting the filter, this can adjust to the appropriate environments and lighting conditions. I can absolutely recommend this filter.