Convenient walk around filter set that fits great on an old classic Sigma 50 1.4 art I use with the Fuji GFX series. The magnetic mount is a good fit and I love how convenient it is to either go super artsy with bloom with the 1/4 black mist, or do some exposure control with the VND and CPL. There is a pretty gnarly color cast with the Variable ND. It's fixable, but it's pretty big. I didn't see any x cross patterns that are bad, but my testing was only down to 24mm on a full frame camera so will explore this more and update this review. The Black Mist is a lot more noticeable with blooming light sources, but the effect looks more like a 1/8th over a 1/4 black mist.
The case that comes with this set is very nice and small, and it all goes well together. It's a nicely put together kit that has solid results. The magnet kit is extremely convenient.
I put a few images up, one of just the water and rocks is a 30 second exposure. You can see the color cast on some of the images using the VND.
The case that comes with this set is very nice and small, and it all goes well together. It's a nicely put together kit that has solid results. The magnet kit is extremely convenient.
I put a few images up, one of just the water and rocks is a 30 second exposure. You can see the color cast on some of the images using the VND.
24/11/2025
For an upcoming trip to Iceland, I was looking for a magnetic polarizing filter and an ND filter. That's how I came across the K&F. I already own several items from this manufacturer (CPL filters, clamps) and have been satisfied so far.
I ordered and tested it. Quick mounting thanks to the magnetic system, the variable ND system works reliably, and the lens cap fits securely and firmly. I used it for filming with a 50mm f/1.2 and a wide-angle lens. Due to its design, it's so thin that there's no vignetting at 14mm on an FX camera.
Adjusting it is smooth and without any jerking. I haven't noticed any significant color shift so far. The included case is robust and protects the filters during transport. A benefit of the magnetic system is that I can leave the ring permanently mounted and quickly attach the CPL filter or the ND filter.
I highly recommend it.
The third image shows the sky at 14mm out of camera.
I ordered and tested it. Quick mounting thanks to the magnetic system, the variable ND system works reliably, and the lens cap fits securely and firmly. I used it for filming with a 50mm f/1.2 and a wide-angle lens. Due to its design, it's so thin that there's no vignetting at 14mm on an FX camera.
Adjusting it is smooth and without any jerking. I haven't noticed any significant color shift so far. The included case is robust and protects the filters during transport. A benefit of the magnetic system is that I can leave the ring permanently mounted and quickly attach the CPL filter or the ND filter.
I highly recommend it.
The third image shows the sky at 14mm out of camera.
23/11/2025
These are high quality filters that are easy to use, swap.and adjust. The attachment system works well and is reliable. I like the lens cap.being included since the original obviously won't. Your original lens hood also won't fit which I should have foreseen but didn't and if I had I would have ordered the 82mm size. then used a adapter ring for my 77mm L lenses as I usually do. The 77mm filters work great with my RF 70-200mm lens and will probably be the main filter set for that lens as long as I don't need the hood. These filters also come in a convenient case that makes the set feel more premium than the plastic snap lock cases you usually get. I'm very happy with these filters and their performance. The color accuracy is excellent. If you are looking for a.high quality polarizing filter it's worth considering these as a step up and having the other filters as well.
23/11/2025
I opted for the 77mm set because it fits four of my Canon lenses. I tested it with the RF 100-500mm F4.5-7.1 L IS USM. The CPL filter performs exceptionally well, the ND filter is precise, and I couldn't detect any optical distortion. I haven't yet had a suitable opportunity to test the Black Diffusion filter.
What I would like to see is a second mounting ring, as this would make switching between lenses much easier. Since the magnetic filters adhere strongly, a kind of "grip" similar to the knurled screw on the CPL filter would be helpful for easier removal. This would also be very useful for avoiding touching the filter surface with your fingers when taking the filters out of the case.
What I would like to see is a second mounting ring, as this would make switching between lenses much easier. Since the magnetic filters adhere strongly, a kind of "grip" similar to the knurled screw on the CPL filter would be helpful for easier removal. This would also be very useful for avoiding touching the filter surface with your fingers when taking the filters out of the case.
21/11/2025
The K&F CONCEPT 82mm Magnetic 1s Swap 5-Pack is perfect for video work. Swapping filters is quick and effortless, colors stay true with no degradation, and the sturdy filters fit securely. The included storage case is excellent for keeping everything organized and protected. Easy to throw in your travel camera bag. It’s a great price for a 5-pack, making it an excellent value for photographers and videographers. Using this kit with my Sigma lens.
21/11/2025
K&F put together a complete set of the most common filter types, threw in some creativity with a black diffusion, put them in quick swap magnetic frames, and finished it out with a case that holds it all.
There is little to no color cast, and the variable ND is really convenient. I haven't had a reason to use the black diffusion yet, but I've seen photos where it was used so I'm keeping it in mind when planning shots.
The filters adhere pretty good, easy to remove but never yet falling off by themselves even with quick pans or over rough ground. Carrying the entire case on my belt has made me more likely to take them along and use them, and the ND in particular has been super useful in afternoon sun.
This is a darn good filter set. Convenient to use, convenient to carry, and less expensive than buying separate filters.
There is little to no color cast, and the variable ND is really convenient. I haven't had a reason to use the black diffusion yet, but I've seen photos where it was used so I'm keeping it in mind when planning shots.
The filters adhere pretty good, easy to remove but never yet falling off by themselves even with quick pans or over rough ground. Carrying the entire case on my belt has made me more likely to take them along and use them, and the ND in particular has been super useful in afternoon sun.
This is a darn good filter set. Convenient to use, convenient to carry, and less expensive than buying separate filters.
20/11/2025
They're really good, among the best I've tried. From the first use, you can tell they're very well made and designed for comfortable, hassle-free work with high-quality results.
To begin with, the case is a total success. It's small, doesn't bother you at all to carry, and protects the filters perfectly, which is very reassuring when you're carrying them in your backpack or hanging them around your neck.
The magnetic system is undoubtedly one of their best features. They attach and detach in seconds, and once in place, they're really secure. You don't feel like they're going to move, even in more demanding situations.
As for the image quality, they more than deliver. They don't degrade the image, maintain a natural look, and the Black Mist filter provides that soft touch to the highlights that's so hard to achieve in post-processing, without losing detail or sharpness.
In short, these are very well-designed filters, easy to use, and with excellent final results. As of today, for me, they're a sure bet.
To begin with, the case is a total success. It's small, doesn't bother you at all to carry, and protects the filters perfectly, which is very reassuring when you're carrying them in your backpack or hanging them around your neck.
The magnetic system is undoubtedly one of their best features. They attach and detach in seconds, and once in place, they're really secure. You don't feel like they're going to move, even in more demanding situations.
As for the image quality, they more than deliver. They don't degrade the image, maintain a natural look, and the Black Mist filter provides that soft touch to the highlights that's so hard to achieve in post-processing, without losing detail or sharpness.
In short, these are very well-designed filters, easy to use, and with excellent final results. As of today, for me, they're a sure bet.
19/11/2025
Love them, a must have for video. Only thing I didn’t see or wasn’t posted that you can’t use the lens hood with it. Not necessarily a negative, but wish you were able to still use it.
17/11/2025
I'll start with the case because I was impressed. It's beautifully crafted and has attention to detail, and those of us who often buy these products know that it's not a given to find well-made cases with top-quality materials. Let's move on to the lenses. There are two magnetic ones in the package. I've used them in varying light conditions, and the lenses performed very well. Having multiple stops makes light settings quick and precise, without having to change lenses every time to find the best one. The magnetic cover is fantastic and very useful; it attaches quickly and protects the lens from impacts. Highly recommended. The quality/price ratio is unrivaled.
14/11/2025
The K&F Concept 77mm Magnetic 1s Swap Filter Kit is an incredibly versatile and well-made photography accessory. The magnetic system is smooth and secure, making it easy to swap filters quickly without threading or cross-threading issues.
Each filter from the CPL to the VND and diffusion filter delivers clean, consistent results with no visible color shift. The coatings help reduce glare and reflections while maintaining sharpness. The included lens cap and carrying case are thoughtful additions that keep everything organized.
Build quality is excellent; the filters feel premium and well-engineered. The magnet holds firmly, even during outdoor shoots in wind or quick lens changes.
For photographers who want to work efficiently without compromising on image quality, this kit is a clear winner.
Each filter from the CPL to the VND and diffusion filter delivers clean, consistent results with no visible color shift. The coatings help reduce glare and reflections while maintaining sharpness. The included lens cap and carrying case are thoughtful additions that keep everything organized.
Build quality is excellent; the filters feel premium and well-engineered. The magnet holds firmly, even during outdoor shoots in wind or quick lens changes.
For photographers who want to work efficiently without compromising on image quality, this kit is a clear winner.
14/11/2025