This filter system is really fantastic.

The filter system from K&F Concept is innovative due to the practical quick-change magnet holder. And K&F Concept can also score again with the quality. All filters can be changed quickly and easily thanks to the magnetic function, each side of the glass elements has a splash-proof, dust-proof, scratch-proof and oil-resistant coating. Everything is well thought out and makes my photographer's heart beat faster.

Quality is okay for the price.
I'm absolutely satisfied With the overall package, the price-performance ratio is definitely right here, the magnet is sufficiently strong, and the bag offers good protection. I would buy the magnetic filter set again at any time

In addition to square filters, I have now also bought the cheap magnetic filter holder set. I can only say: great. A second glass-filled filter holder is included, which can be held up permanently with an adapter ring for a second lens size and still! In short: the article convinced me. would i recommend it Yes, everyone who wants to work with a neutral density filter from time to time.

The Magnetic Variable ND filters are attached via magnetism, which means that the filters can be changed very quickly and easily. Screwing is no longer necessary, which is extremely practical, especially if you want to capture moments in nature that don't wait for the time-consuming change of the filter. The sides of the glass elements are also waterproof, dustproof, scratchproof and oilproof.

The overall quality of the filter is excellent. Great color and sharpness. No X pattern.

Bought to protect my 28-60mm Sony lens from dirt and scratches.

It fulfills its function by protecting colors, not distorting or altering them. In my case I bought it for a 40.5mm diameter which is not found on all brands.

I have more products from K & F Concept and all of excellent quality and good price.

Absolutely recommended

I bought this to use with a SmallRig filter holder which I bought unaware that it only works with magnetic filters. The filter part of the filter is fantastic and works exactly as it should. However, the magnet feels weak. I bought it to shoot videos at concerts, but I'll probably never use it for that because it feels like it'll fall off at the slightest bump. If you're using this in a controlled environment, I'd have no hesitation in recommending it.

The magnet system is just easier and faster to use when adding or removing filters. The glass seems to be of high quality and I really liked what K&F Concept did with these filters.

I needed a UV filter that would match the wide angle zoom lens I bought and make it an ideal complement.

I'm really excited about these new filters that K&F is releasing. The magnetic filter system is a great idea for strong ND filters as I often have to compose my shot without the ND filter attached (because without it it's much easier to see through the lens) and then have to attach it to take the shot . Being able to easily snap the filter onto the front of the lens takes a lot of effort out of removing and reattaching the filter.

The optical quality is excellent, with excellent clarity and hardly any color cast. The processing quality of the metal rings is solid; They are smoothly machined with smooth edges and beautiful knurling. The rotating ND filter rotates smoothly, with hard stops at both ends of the spectrum so you'll know when you've reached the limits.

The magnetic attachment keeps the filter firmly in place, but is probably best used in controlled tripod setups where you know the lens won't be bumped. I definitely wouldn't use this in mass situations where someone or something might knock the filter off, as it wouldn't take much of a jab to make that happen.

No lens cap is included, presumably because the extra weight would make the filter too heavy for the magnets to comfortably hold. K&F makes a magnetic lens cap that I got with another K&F filter set, but it doesn't fit on the outside of the ND filter because the outer ring is larger than 77mm. However, the magnetic lens cap fits on the inner ring, so you can use it when you don't use the ND filter. As far as I can tell, you can't buy the magnetic lens cap individually, only in a bundle with other filters.

The quality of this filter is quite comparable to that of Tiffen. It's reasonably priced and I would definitely recommend it for tripod landscape photography.