Great Variable ND Filter for the price

A long time ago I started looking for filters for my Canon camera which I now have with a 77mm Sigma 17-50 lens. And since I'm not a pro or anything like that, spending some money on filters and then giving them a more recreational use gave me one thing. So I started looking at 77mm filters cheaper and buying these.
In the box you have three filters, a purse to carry these filters without being filled with dust and a brush to clean them.
Filter:
The first is an ND 4 filter, typically used for longer exposure photos. In the use I've given it has given me good image quality with no rare tint too obvious. Nothing that can't be easily corrected with a little color retouching.
The second is a polarizing filter, the intensity of which varies by rotating the filter itself. This is mainly used outdoors to remove unwanted reflections or increase the contrast of landscapes. In this case it's quite dark, so you can also run the times of the ND filter. Here we already find a little more vignetting than in the previous filter, perhaps because this is variable instead of being a fixed filter as in the previous case.
The third is the typical ultraviolet filter, which is usually recommended more than anything else to avoid rubbing a lens, which costs a lot more than the filter itself. The pocket: okay,
it
's just functional and corresponds to what it serves. The 77mm filters I bought in my case fit easily and are great.
Brush:
A little like a little like a little, it's functional. You have two endings. One end has a silky finish and the other end is more of a regular brush with hair.

In conclusion, if you don't want to spend a lot of money on filters these will help you save and you'll have three pretty good value than what other brands would cost for just one.

I have used numerous filters, from Cokin, to buying several for different sized lenses. And, I do a serious amount of light and strobe painting (do a you tube search, if you're curious). So, when I dropped my super expensive ND filter, I was crushed! Right up until I found this K&F Concept ND, which offers a "Variable Neutral Density". Imagine looking at purchasing an ND Filter for the Typical four hundred bucks (and, that is only for a single fixed ND number)? Oooor, grabbing this well constructed, high quality ND filter that you can adjust to your liking ON THE FLY! Still thinking...
Buy it Bonehead!

I have used numerous filters from Cokin, buying several for different size lenses. And I do a serious amount of light and strobe painting (do a YouTube search if you're curious). So when I dropped my super expensive ND filter I was devastated! Until I found this K&F Concept ND that offers a "Variable Neutral Density". Imagine buying an ND filter for the typical four hundred dollars (and that's only for a single fixed ND number)? Oooor, grab this well constructed, high quality ND filter that you can tune to your liking ON THE FLY! I still think...
Buy it Bonehead!

This is my first variable ND filter and Im very happy with it. I got the 77mm version because its a very common size and I already have three lenses that it could fit. Plus with adapters, I can get my smaller lenses to work as well.
The filter. Overall its great. Metal construction with a very smooth ring.
The stops are marked on the ring and the overall construction is very good.
Again this is my first variable ND and so far I'm enjoying it very much.
Price is affordable too.

I love this 77mm ND filter that fits perfectly with my Nikon 70-200 f2.8. I use step-up rings for other lenses like my 85mm f1.4. The ease of use is phenomenal and it glides so effortlessly. I love this filter. I would recommend it to anyone to push it down to the darkest, open the aperture wide and take a long exposure during the day for amazing results. Enjoy!

I've had variable filters before, but I've never been happy with the dreaded Xs on the screen when spinning or the uneven color cast across the screen, and they's great, very even light reduction across the frame and no Xs. I have the 77mm filter, it is very well made, 77mm so no vignetting in the corners, the small disadvantage with it is that I can not fit the filter with my hood, but no big deal. We recommend.

I have an ND 400 that I use for waterfalls etc but do not always want to block that much light so was looking for something a little faster Maybe an ND16.I have had variable filters in the past but have never been happy the dreaded Xs on the screen when you rotate or uneven colour cast across the screen.I saw the K&F advertised claiming that you did not get any of thease issues so thought I would try and they are great, very even light reduction across the frame and no Xs.I have the 77mm filter it is really well made there are stops on the rotation so it it easy to tell where the limits are, the frame itself is slightly larger that the 77mm so no chance of vignetting in the corners, the slight disadvantage of this is I can not seem to fit the filter with my hood in place but not a huge deal.Highly recommended.