Fits perfectly

I can only recommend it to every photographer and especially filmmaker!

I am a self-employed filmmaker and usually work with relatively expensive ND filter systems or have a built-in ND filter in my Sony Fx6, for example. But I needed an external solution for my Sony A 7 IV. Before I buy systems from Tilta or similar for 500 - 1000€, I wanted to try out the K&F solution at least once and that was the right decision. Works very finely at removing light. The filter wheel is also easy to operate, so you can also adjust the filter on a gimbal. Great!

I have had many filter systems. From very expensive to really cheap. This filter is priced rather lower, but the quality is high! I'm really excited and have made the filter an integral part of my equipment

With IP66, the K&F Concept surveillance camera is very well suited for outdoor use!

These monitoring systems are now a very cheap mass product.

As a 360° surveillance camera, it can monitor a large area if positioned correctly!

I have now installed two of these cameras monitoring the carport and garden shed.
In the carport, the camera hangs on the ceiling, protected from the weather. The camera installed at the garden shed is relentlessly at the mercy of the weather.

The image quality of the 2K surveillance camera is absolutely OK.
The night vision shots are especially great!
As with most camera systems, the two-way audio quality is pretty mixed!

A suitable memory card is not included in the scope of delivery.

If you can handle it, you get a well-functioning surveillance camera, which is not circulating as a mass product under different manufacturer/seller names!

I have this ultra-low reflection uv filter in three sizes! It is very well made, easily threads on the lens, and provides great UV protection as well as preventing my actual lens from being scratched. Great value for the price! Picture quality is great through the filter. I use this filter for everything outdoors.

For my standard zoom I wanted to buy a variable ND filter and came across the K&F filter. As usual, it arrived well packaged and quickly. A transport box is included. The filter has levels 8 to 2000 and covers a very large area. I immediately tried the filter on my Olympus OMD EM1 MkII, it works great. I could not detect strong vignetting or noticeable color casts. With maximum darkening, one should pay a little attention to segmenting patterns (light-dark). Of course, the K&F filter cannot keep up with large filter systems, but that was not a selection criterion for me and such systems cost a lot more. The price-performance ratio is great here!

The set is the perfect introduction to the world of filter systems! If you want to try your hand at landscape photography or if you only do landscape photography "from time to time", you won't be able to avoid the set. It is solidly built and even a stay of several weeks on the beach could not harm the filter, the mount or the adapter rings.

Since I don't want to own (or pay for) several round filter systems, such adapter rings are indispensable. The K&F Concept model is of good quality at a fair price. There is nothing to complain about here.