I can confirm there was no black X mark on the images, works very well with my lenses. Make sure to remove the protective UV filter on your camera if you have one otherwise you will get some vignetting on the raw photo (which can obviously be adjusted post processing but it always good to have it done correctly first as it will save you time). I am using this filter on my 17-40mm and 24-105 canon lenses and it works perfectly with both of the lenses. I bought the 77mm version and it is definitely worth the money. Will give you some great shots in the daytime of waterfalls if you are into nature photography. A must have for long exposures.

There are many differnt brand out there, recently K&F has become one of my faverate choice for the VND. Ever since I bought their 67MM VND. So far it works great on my lens, the picture quality is good, and so is the build quality, too. and doesn't break your bank like some other brand.
This time I got this 62MM VND8-128, same build quality, and I expected the picture quality is going to be the same as the other size. It also has the hard stop to provent you go over the stops , so no X cross.
I will be using this VND in my future vlogs, and vidoes.
tho the price is a bit higher than the one I bought before, I wish the price could be even better.

well worth the money. quickly delivered... pair this with a set of step down rings to cover all of your lenses, and you have the perfect enthusiast nd filter set up...

A very nice ND filter for the price, no noticeable effect on sharpness for video work (though not tested with high resolution photography) and minimal issues with flaring in bright sunlight so the coatings work quite well. As long as you use it within the specified ranges you won't see the typical X pattern of variable ND filters. Does what it needs to do without detriment to image quality, which makes it a pretty perfect filter for the price.

I am using it since a year and I very happy

The ND8 to ND128 filter covers a very useful range. There is no visible banding and very little colour change. More test are required to determine the performance in greater detail and different conditions, but I am impressed with the initial results, which show good consistency and accuracy of markings on the filter ring.

Great bit of kit cuts out all the Pfaff of keep changing lenses

So far it's easy to use.

82mm used on Nikon 24-70 F2.8, now have the 77mm for 70-200 F2.8, may try a 52mm to see if it will fit a 300mm F2.8 drop in, allowed me to shoot the Lancaster on a bright day at F6.3 (sweet spot) iso64 at 1/6th second to obtain perfect full discsCracking filter fully recommend

I've been looking for a decent Variable ND Filter for some time now and stumbled across this one from K&F.Having recently purchased a new backpack from the brand and being impressed with the quality, I thought I'd treat myself to this filter. After all it claims to not have the dreaded X that almost all Variable ND Filters have.On first impressions the filter was packaged very well in a hard branded card box. Inside was a plastic clamshell style case, housing the filter safely in a foam material.Getting my hands on the filter, I was amazed with the built quality and overall feel for the price! It feels well put together and durable.Having only briefly tried it on the Canon 80D paired with the EF-S 17-55mm f2.8, there is a small amount of vignetting at 17mm. However this disappears as you zoom in. (The small amount of vignetting can easily be removed in post)Thanks to hard stops at ND8 and ND128 the filter doesn't cause that dreaded X.Pros:- Excellent value for money- Great build quality and usability- Minimal vignetting and colour cast- Nano X glass offers clarity, scratch resistance and waterproofingCons- Case could be sturdier (a metal tin and an insert to hold the filter snug when in the case would have been better)As stated above, my only disappointment is the case. It will keep the filter safe, however the filter does just sit inside on top of a piece of foam allowing it to slide around.All in all another quality product from K&F! I'm certain it won't be my last purchase from this brand!