Great ND filter. I never take it off when I am filming.

I use this both in the studio to drop my F-stop, and for Video. Used it on professional shoots with my RED, and smaller shoots with my Fuji. Haven't pixel peeped it, but during my edits, I notice no desegregation or X. The best variable I've seen, and absolutely a steal for the price.

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

Fits perfect! Exactly as described.

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!

Great value for the price. Now I can take more pictures during mid day as i can darken the harsh sun. Also good for slow shutter speed photography so you can get the motion blur without the highs blowing out your shot during the day.

The first thing that stands out is the nice packaging that it comes in. Definitely meant to keep the ND filter safe. I tried a few video clips and some photos with the filter attached to my Zeiss 24-70mm lens. The image quality was very good and the filter feels really substantial.I'll post some images after uploading to my computer.