Trying to shoot a long exposure photograph around sunset or sunrise with a standard ND filter can be a challenge. However, with this filter I was able to easily adjust to the changing light condition and keep my shutter speeds where I wanted them to be to ensure that I was able to capture the light trails of the cars in their entirety. The filter did not produce a color cast which is excellent for a filter in this price range. The team at K&F have a winner on their hands with this filter.

I had a smaller diameter of this product for a different lens, so when I got my new lens the first thing I bought was this ND filter. It is incredible. And this one had little dots along the edge, as well as text that read "Min" and "Max". This was super helpful. My only complaint about the smaller ones was that you couldn't tell how far was the maximum and minimum, and this model has solved that issue. I don't go anywhere without this filter. I will be buying a K&F Variable ND filter for every lens that I get from now on.

Love it works great. However! if you have a 58mm thread you will need to buy a 62mm lense cover as the front thread is larger than the back thread and the 58mm will not fit. Just a helpful tip when looking into buying this product.

These filters are marvelous with ideal cinematic qualities. Most importantly you receive a product with high-end build quality and appearance at a more competitive price than other brands. HiShop is a very professional organization and I plan on returning to this vendor in the future.

I was surprised at how good this vari filter turned out to be for under $20! I needed a vari-nd to bring with me on my trip to Thailand as I was only bringing one lens (blackmagic pocket cinema with a panasonic 20mm 1.7). I normally use the Hoya ProND (one of the very best ND filters) but I needed some more practical for a vacation as carrying NDs would not be. Looking at the footage I've shot I'm very glad I decided on purchasing this as I haven't noticed any tint yet (though I shoot raw). Remember that there is a rainbow effect when used behind certain glass surfaces.

I purchased this variable ND filter to use on Nikon D300s with 18-200mm lens. I tested the filter against a white wall over various settings: f-stops, shutter speeds, ISO and ND settings. Works quite well at all settings except extreme ND where I saw uneven brightness areas on the exposure but I had to push ISO past 3200 to even get the exposure. At 3200 ISO it could also be the camera. In all I am very satisfied and would recommend this variable ND filter for most amateur photographers. For amateur photographers the price is right.

Bought this hoping to solve the need to stack filters and it’s better then that! It solves the infinite nd filter spinning. With most variable nd filters you just keep spinning around and around, so you end up with those dark x shapes and other issues. This filter has markings and a lever that stops at both ends of the variable nd, meaning you don’t go to far and ruin your shot. Is it the best image quality in a filter (probably not) but it also isn’t 3-400 bucks. So it’s killer for value

Not sure how long I’ve head these, close to a year, I think. They are fantastic for my video work. When shooting lower budget business promos or mini documentaries outside, I almost always have one of these ND filters on.

It really cuts the low HDR on my lowest priced camera package. I do a lot of videos for Fly Fishing guides and have an ND filter of the quality and variability makes me feel like I have a lot more control.

I normally am running Canons from 70D on the low end of my package deals.

As far as video quality goes, I can’t notice that the filter was on in post, except that I have a shallow depth of field and my highlights aren’t blown out.

This fits well on my Canon Rebel T6 and does a great job taking pictures in direct sunlight.

If you shoot photo (or specifically video) outdoors in the sunlight, you NEED a variable ND filter.

For video, if you're shooting 30 FPS, you need to keep your shutter speed at 1/60 (because of the 180 rule) for natural blur and smoothness. If you want a nice blurry background at f/2.8, even at ISO 100, there's a great chance your image will be horribly exposed. Your only options are to increase the shutter speed (and compromise the natural look with distracting "choppiness") or crank up to f/16, which will flatten your image and get rid of that blurry background you wanted!

In comes the variable ND filter. When applied, like variable sunglasses, it allows how much light passes through, kind of like an intimidating bouncer at a night club. So just twist the ring on the filter and you can achieve your shot perfectly!

With this specific filter, two small things bummed me out:
1. The ring doesn't have actual stops, just continuous rotation so you can't really keep track of the specific amount of light you're letting in.
2. When the filter is on my Tamron 28-75 2.8 lens, I can't put the lens cap on at the same time. Not a deal breaker, but annoying when you want to quickly take a picture or shoot some video.

But for the price, it's hard to argue this isn't a great purchase.