Quality: +++++
Workmanship: +++++

Compactness/Size: +++++
Application: +++++ Glass Quality: +++++
Stability/Robustness: +++++
Flexibility: +++++
Functionality: +++++
Precision: +++++
Price/Performance: ++++ You immediately experience

the first moment of WOW when you unpack the filter.
What a brilliantly done packaging. What a really beautifully made filter bag.
The storage bag is made from genuine leather material, handmade and produced specifically for K&F Concept photographers. Nan immediately sees here: there is attention to detail behind it.
This is not only very helpful against dust, scratches or dirt, but it also looks very classy!
Absolutely TOP!
The workmanship, design and quality look very high-quality and very well made, and the filter glass texture also makes an extremely positive, scratch-free impression.
The frame is made of brass material, which significantly improves hardness and flexibility, and the screwing and unscrewing is smooth and flawless.
K&F Concept coating technology gives the filter very low reflectivity, which ensures good light transmission, reduces stray light and ghosting, prevents glare and does not affect the original performance of the lens.
A really well made filter.
The double-sided 36-layer nano coating is waterproof, dirt-proof and scratch-resistant and therefore ensures excellent filter durability.
This screw-on filter ensures that you can reduce the light for taking photos. This results in a longer exposure time, which can be used well for certain situations.
We have now tested this filter a few times and so far we are quite satisfied with the results achieved.
It does what the filter does or should achieve well. In this way, waterfalls, streams or moving clouds can be easily blurred or run. Or you can also use such a filter quite well here in areas that are very busy with people. With a long exposure, you can easily make people who are moving disappear from the photos.
But you can definitely recommend it. Nice effects, no visible color changes (blue tinge, purple tinge, etc.).
The ND1000 filter reduces light by 10 stops, which causes no color cast and no loss of image quality.
On the subject
of autofocus and filters: Autofocus continues to work well with the Sony A7 Mark 2 or the Sony 6500 combined with various lenses, although this wears off a bit. Here you simply have to switch to manual focus.
Overall, a really well-made filter, with the advantage that it is easy to install compared to rectangular filters, which require a rectangular filter attachment.

We put a lot of effort into writing our reviews and invest a lot of time. In doing so, we address positive as well as negative aspects of the product in order to explain everything before making a purchase. Who likes bad surprises? So not us. So we hope that our review was useful and was able to help? Thank you so much!
Best regards