I needed a suitable polarizing filter for my Nikon 50mm lens. I am pleased to be able to test the K&F Concept polarizing filter from the K series in 52 mm.

I received the polar filter packaged in a plastic box and a microfiber cloth. It makes a very good impression in terms of workmanship.

Screwing it onto the Nikon 50mm lens went smoothly, you can feel when it is tight. But you shouldn't screw it on too tightly, otherwise it will be a little harder to turn.

The filter should then only be turned using the outer rubber ring, which is also very easy. Of course, if you touch the entire filter and turn it, you either turn it tighter or turn it off completely. That's what I did at first. But then it worked perfectly, just touch the outside of the rubber ring and turn it. Turning it on to an older Nikon 28-70mm was a bit tricky. After 2-3 times it worked.

The filter is intended for landscape photos to improve colors and contrast, among other things. I could notice slight differences, I hope this will become even more noticeable in midsummer.
I give 4 stars because the workmanship is very good, the handling is also very good and there is a very good price-performance ratio.