How I Use It:
So I’ve been using this KN lens filter for two months mainly for my small business.
Features that stood out to me:
The vignetting works great, and I also really liked ease of screwing it on because it simplifies my day a lot. The style was pretty good too, I tend to get more work done.
My Personal Experience:
If I compare this one against the others I’ve used, this one is just plain better. I wasn’t expecting to like the look of it as much as I did.
Pros and Cons:
What was good: video quality.
What was not: expensive for what it is.
Durability:
After two months, it still does its job the first time every time with no fuss. I can’t really ask for more.
Final Thoughts:
Overall this is best for camera enthusiast types. It’s been good for me and my needs and I’d buy it again.
So I’ve been using this KN lens filter for two months mainly for my small business.
Features that stood out to me:
The vignetting works great, and I also really liked ease of screwing it on because it simplifies my day a lot. The style was pretty good too, I tend to get more work done.
My Personal Experience:
If I compare this one against the others I’ve used, this one is just plain better. I wasn’t expecting to like the look of it as much as I did.
Pros and Cons:
What was good: video quality.
What was not: expensive for what it is.
Durability:
After two months, it still does its job the first time every time with no fuss. I can’t really ask for more.
Final Thoughts:
Overall this is best for camera enthusiast types. It’s been good for me and my needs and I’d buy it again.
11/10/2025
I seriously like this filter. It comes in a nice leather pouch that keeps the filter very well protected. The filter is very well made, with solid metal construction. IMO, the color accuracy is really nice. I'm not going to say perfect, but only because each person sees things differently. The adjustment has a nice snug spin to it that holds its setting quite well. In all, the filter works as it should; my only complaint is that it has no hard stops. It's really easy to move out of the range. Not a deal breaker, I just wish they would add hard stops on my filters. This filter has earned a spot on my 70-200, and I use it quite often here in sunny South Florida.
04/10/2025
I’m an amateur photographer maybe even more a hobbyist and trying to expand my knowledge and equipment from the videos I shoot. I have been really impressed with the K&F Concept equipment so far and this variable ND filter is no different.
The build quality seems consistent with the other equipment I have from them and is impressive to me. It feels solid and well made. Even though it is scratch resistant I am glad I haven’t had to test that particular feature. The included case is a nice bonus to help protect your filter when in storage or travelling and it fits in my camera bag without an issue. I found the grip to be beneficial when handling the filter. I also found the filter to be easy to put on and remove.
The adjustment lever makes it super easy to fine-tune the amount of light coming through. I love how smooth it rotates, and the clear markings make it easy to know exactly where you're set. It feels very beginner-friendly but still high-end in how it works. There’s no vignetting in my shots with my Sony camera’s 24mm or 90mm lenses, and the thin frame keeps things nice and compact.
The image quality is excellent—everything looks sharp and clear, and I haven’t noticed any weird color shifts or loss of detail. Even when shooting in strong sunlight or in the my studio area with backlit scenes, the filter handles glare and reflections really well. I’ve been trying to play with blurring motion using longer shutter speeds, and the results have been awesome so far, even though I know I am still learning.
For the price and the build quality, I think it’s a fantastic value. I looked at similar filters in local stores, and most of them cost a lot more without offering anything better. This one is easy to use, and performs great. If you're looking to experiment I found this filter to be a great investment.
The build quality seems consistent with the other equipment I have from them and is impressive to me. It feels solid and well made. Even though it is scratch resistant I am glad I haven’t had to test that particular feature. The included case is a nice bonus to help protect your filter when in storage or travelling and it fits in my camera bag without an issue. I found the grip to be beneficial when handling the filter. I also found the filter to be easy to put on and remove.
The adjustment lever makes it super easy to fine-tune the amount of light coming through. I love how smooth it rotates, and the clear markings make it easy to know exactly where you're set. It feels very beginner-friendly but still high-end in how it works. There’s no vignetting in my shots with my Sony camera’s 24mm or 90mm lenses, and the thin frame keeps things nice and compact.
The image quality is excellent—everything looks sharp and clear, and I haven’t noticed any weird color shifts or loss of detail. Even when shooting in strong sunlight or in the my studio area with backlit scenes, the filter handles glare and reflections really well. I’ve been trying to play with blurring motion using longer shutter speeds, and the results have been awesome so far, even though I know I am still learning.
For the price and the build quality, I think it’s a fantastic value. I looked at similar filters in local stores, and most of them cost a lot more without offering anything better. This one is easy to use, and performs great. If you're looking to experiment I found this filter to be a great investment.
22/09/2025
Excellent quality filter! The ultra-low reflectivity really makes a difference—images stay sharp with no noticeable color shift, even at higher ND levels. The adjustment ring is smooth and precise, giving me full control from ND2 to ND400. It’s perfect for both photography and video, especially when shooting outdoors or near water. Build quality feels premium, and it comes well-packaged for protection. A fantastic value for the performance—highly recommend!
17/09/2025
K&F is my go to when looking for quality filters and they have models at just about every price point but their Nano-X line is at the top of their series. This VND covers a full 9 stops which helps with your outdoor shots (cloudy to full sun) or when you are looking to improve the motion blur of your video. Build quality is right there with other filters in this price range and there are no worries regarding X cross or vignetting with this filter series. If you are looking for a high quality VND filter this one is one to consider.
16/09/2025
This is a great variable nd filter from K&f concept. Its easy to install, easy to use, effectively reduces light coming into the lens, and has clear markings so you know where you have it set.
The functionality is perfect and this is living on my S5M2x now for all of our outdoor work.
Really great value for what you're getting. My local camera shop had similar items but they were charging significantly more. I'm very happy with the build quality and glass clarity. Really great product.
It comes with a carry case!! this is such a nice touch and makes transportation so much easier when you don't have to worry about your filters getting scratched.
The functionality is perfect and this is living on my S5M2x now for all of our outdoor work.
Really great value for what you're getting. My local camera shop had similar items but they were charging significantly more. I'm very happy with the build quality and glass clarity. Really great product.
It comes with a carry case!! this is such a nice touch and makes transportation so much easier when you don't have to worry about your filters getting scratched.
16/09/2025
I shoot primarily during daytime hours and have been struggling with achieving shallow depth of field in bright conditions while maintaining proper exposure, so this K&F Concept variable ND has completely transformed my shooting approach over the past month. The ability to adjust density from 1 to 9 stops by simply rotating the filter ring means I can maintain my preferred f/1.8 or f/2.8 apertures even in harsh midday sunlight.
What makes this particularly valuable for my video work is how it enables proper shutter speed adherence to the 180-degree rule when shooting 24fps footage, requiring 1/50 shutter speed that's impossible without filtration in bright conditions. The filter rotation feels perfectly calibrated with just enough resistance to prevent accidental adjustment while remaining smooth enough for quick changes between shots.
The optical quality genuinely rivals filters costing twice as much, with no color shifts or sharpness loss that I can detect in my final images. I've successfully stacked it above my Black Pro-Mist filters without any mechanical interference, which maintains my preferred aesthetic workflow. The premium case design with magnetic closure and protective padding demonstrates attention to detail that many established brands overlook. This has become an essential part of my kit for outdoor portrait sessions.
What makes this particularly valuable for my video work is how it enables proper shutter speed adherence to the 180-degree rule when shooting 24fps footage, requiring 1/50 shutter speed that's impossible without filtration in bright conditions. The filter rotation feels perfectly calibrated with just enough resistance to prevent accidental adjustment while remaining smooth enough for quick changes between shots.
The optical quality genuinely rivals filters costing twice as much, with no color shifts or sharpness loss that I can detect in my final images. I've successfully stacked it above my Black Pro-Mist filters without any mechanical interference, which maintains my preferred aesthetic workflow. The premium case design with magnetic closure and protective padding demonstrates attention to detail that many established brands overlook. This has become an essential part of my kit for outdoor portrait sessions.
13/09/2025
PRODUCT
K&F Concept 58mm Ultra-Low Reflectivity Putter Variable ND Filter
QUICK REVIEW
Premium Variable ND Filter, smooth controls
REVIEW
I needed a Variable ND for my 35-100mm lens to stop down the light for motion blur effects in bright light. This filter allows for silky smooth adjustments. Allowing me very granular control of exposure time (shutter speed). I like the results so far and I can't wait to try it more in real world settings (vs my front yard). The colors are still vibrant with the filter maxed out. It took a while to get used to the putter dial, but after some experimentation it was fine. I do wish there were hard stops at max and min instead of allowing me to blow past these limits. But Like I said after some experimentation, it is easy to get used to.
RECOMMENDATION
If you are looking for a high quality Variable ND lens filter, this is premium all around.
K&F Concept 58mm Ultra-Low Reflectivity Putter Variable ND Filter
QUICK REVIEW
Premium Variable ND Filter, smooth controls
REVIEW
I needed a Variable ND for my 35-100mm lens to stop down the light for motion blur effects in bright light. This filter allows for silky smooth adjustments. Allowing me very granular control of exposure time (shutter speed). I like the results so far and I can't wait to try it more in real world settings (vs my front yard). The colors are still vibrant with the filter maxed out. It took a while to get used to the putter dial, but after some experimentation it was fine. I do wish there were hard stops at max and min instead of allowing me to blow past these limits. But Like I said after some experimentation, it is easy to get used to.
RECOMMENDATION
If you are looking for a high quality Variable ND lens filter, this is premium all around.
09/09/2025
I am fairly new to photography but we did get a chance to use the filter a bit on vacation and it worked as we expected it to. Probably will work better as we learn more.
05/09/2025