I ordered an nd 1000 filter for 55 mm it is very good for starting long exposure (see photo) there is even a protective box with hooks so that it does not move inside HIS BEST ADVANTAGE IS THE PRICE It is cheap and it works great!!

Exceptional quality of this 82mm and 1000 filter. Excellent material finish, perfect fit in the thread and exceptional results. Image taken at 7am. Comparison between shooting without filter and shooting with filter. I used a time of 15 seconds to achieve the water silk effect”. ideal for photos at the sea and streams for the so-called "silk effect" This is a neutral density filter with really important construction characteristics. Advantages: Quality of the glass; 82 mm perfect graft; Excellent performance;

This filter produces a green cast. BdB set to sun, a green turn appears, this corrects correctly with Photoshop or other software.

Play Video This is a professional quality filter. The photo results are amazing. It does not cause image distortion and is delivered in a protective box which allows it to be stored perfectly protected. 100% recommended

Beautiful object well designed, and the filters are of quality.

Admittedly, the system of magnetic filters is not entirely new and I cannot say who copied from whom, but I already know K&F from their very good lens adapters and solid tripods. And since I've been flirting with magnetic round filters for a long time, but up to now the prices for such a system have seemed too steep to me, I was of course interested that K&F now also offers something like this.
You can read in my review whether the magnetic K&F round filters were able to convince me or whether the low price demands too many sacrifices here...

So far I have used screw-in filters from Rodenstock, B+W, Heliopan and Haida. So everything is more of a brand where a filter likes to cost what K&F wants here for a complete set including a bag. I was therefore very skeptical about what to expect, also because K&F advertises with Schott glass (hardened and therefore very robust) and 16-fold nano sealing. That sounds surprisingly good at first, but it doesn't have to mean anything in practice, because in the end it's always the optical performance that counts, no matter how great the handling advantages are.

Which is actually better, round filters or a 100mm filter system with plate filters, this question will certainly be asked by everyone who gets into the subject of filter photography. So far, round filters have always had to be screwed into the front thread of the lens, which can be very cumbersome depending on the situation and the lens. Even when several filters were combined, each one had to be screwed onto the previous one individually, which in turn very quickly leads to vignetting, at least whenever the filters have the same diameter as the lens. Therefore, a 100mm or even 150mm plate filter system has always been the first choice for professionals.

But now the topic of round filters has been revolutionized by the introduction of magnetic filters. Changing filters has become so simple that the handling advantage of plate filters no longer exists for me. On the contrary, with plate filters I always have to be extremely careful not to accidentally grab them (fingerprints) and that unfortunately happens very quickly when taking them out of the bag or putting them in the holder. Unlike here with a round filter with its metal frame. Of course it can also happen here that you accidentally touch the glass, but the risk is much smaller and round filters are much more robust. Anyone who has ever dropped a plate filter will know what I mean

the magnetic force of the filters is reassuring because strong
the quality of the processing of the nd1000 seems in the standard without colorimetric drift

More magnetic filters please

I am very pleased with this system and the quality of the filter lenses. It is wonderful for very quick changing of filters. Unfortunately I accidentally lost the ND filter the first time I went out and did not realise it until I was back home. My friend had zipped the bag they come in, and I, thinking it was still open and more concentrated on trying the one on the camera. unzipped it. So during my wanderings, the ND fell out. I did eventually manage to replace it, and received a magnetic lens protective cover as part of the order. I am made up now. I do recommend this system and it has the filters that I use, perfect.

As a landscape photographer, I found this filter system really interesting. Unlike screw filters, these filters are applied and removed in a fraction of a second, while unlike plate filters they are much less bulky, lighter and, of course, much quicker to install.

PACKAGING AND CARE OF DETAILS

The filters are delivered in a convenient and very well made case with four compartments. The case, in the back, has a hook and loop buckle that we can use to attach it to our tripod or our trousers and, in addition, a metal ring so that it can be attached to our backpack, tripod column or wherever we prefer. Finally, the zip closure of the case is resistant to rain or water infiltration.
The filters are contained and protected individually inside special sachets so as to avoid any potential damage.

CONSTRUCTION

These magnetic filters from the K&F Concept Nano Series are made of optical glass that is perfectly resistant to water, oil and dust. The external frame is in slightly knurled aluminum to allow an excellent grip.
They are extremely thin and, even by mounting all three filters at the same time (UV, CPL and ND1000), the thickness is extremely low.

UV FILTER

In the photographs I took with the UV filter there are no color alterations, no loss of sharpness and details and no dominants of any kind.

POLARIZING FILTER

This polarizing filter provides a pleasant overall contrast to the image, increases the contrast between individual colors and saturates them without overdoing it. In addition, it provides a very slight warm cast which, personally, I do not mind but which is easily corrected in post-production.