I'm used to using filters with the SLR. With the RX100n7, this is only possible with a magnetic filter adapter, eg Carry Speed Magfilteradapter 52mm. The polarizing filter from K&F Concept has proven itself on a hiking holiday in Italy. The image result is very good, the quality of the filter is excellent. Together with the filter adapter you get results like with the big SLR cameras. (It's also due to the quality of the RX100m7) As I said, the image result convinced me that it wasn't a bad buy. Can recommend the K&F Concept D-Series Pro 52mm Slim circular polarizing filter at any time.

really love the K&F concept filters - they just work...every time. This CPL is both affordable and made from quality glass. There is no vignetting on my 18-140mm lens. And most importantly, there is no color shift like other CPL filters. The threads fit my camera's lens, and the adjustment ring offers just enough resistance to make adjustments smooth and comfortable. This is an excellent polarizer, you will not regret this purchase.

Had previously ordered the filter from KentfaithBasic but unfortunately it blurs my Sony 135GM F1.8 as if it were a much cheaper lens. The KF is sharp, and costs about 2.3 times more at ISO, quite normal and at F1.8 often very desirable in daylight. It's very flat, which in itself is a good thing. The only thing is that the lens cap does not hold as well as it should. Rotatability is ok, steady but a bit heavy. You should get yourself a pull-off tool, without it the filter is often difficult to remove. Filter effect at the lake was ok, but of course not all reflections go away, that would be against physics. So overall I'm very satisfied. Small addendum: The filter has a slight brown/yellow tinge, which is already noticeable in the sky. The corrugation when turning is good. If you have a good lens, you should not skimp on the filter. Possibly better a good one in 82mm and then adapter rings.

These are well made filters, the ring is very small so they don't cause vignetting even on wide angle lenses. These screwed smoothly onto my lens and stayed on securely. These circular polarizers only reduce the light a little, and once screwed on there is an outer ring that allows you to rotate the polarizer to get the best effect. You can use these to reduce reflections from things like water, glasses, and windows. Because it reduces reflections, you can look down into the water, making it look clearer and cleaner. It also helps provide a clearer sky image when taking photos outside. This is the “D” series filter, they also have a “K” series. I'm not sure of the exact difference between the two as K&F's own website doesn't really explain it. From what I can tell the "D" series (these) are a slightly more expensive design with more layers of coatings including water/oil repellent coatings on both sides. They describe these as "waterproof". Definitely well-made filters that do the job.

Good value for money, took a few test shots, it works

For the price it seems to me that it is far above the quality. I recommend it to people who are on a low budget.

Quality product that arrives well packaged in its plastic case. When trying to unscrew the filter from the lens, only a narrow area needs to be grasped. Up until the point of printing I had no trouble taking it off. As you can see from the pictures it did exactly what it was supposed to do and cut out the reflection from the watch crystal.

purchased this 82mm circular polarizing filter to use with both my Sigme 24-70 f/2.8 E mount and my Canon 24-70 f/2.8L II lenses. It's just a perfect polarizer for these versatile zooms. The lens is extremely well made and the circular effect is smooth as silk when attached to the lens. The high-quality multi-coating ensures details in photos and videos without artefacts or haze and ensures excellent focus accuracy. Polarizing filters have many uses, including deepening the color enhancements of skies and landscapes, especially in bright light conditions. In addition, the circular settings can be used to shoot through windows clearly and without reflection, and to take pictures or videos through water. For example, this filter can be used to capture perfect images of Koi (Japanese Colorful Carp) in a pond without light bouncing off the water's surface. There are other uses as well. To operate, all that is required is to point a camera at the subject and rotate the outer plane of the filter until the desired effect is visible through the viewfinder... or on a screen. Easy peasy. I own a number of K&F filters of various types including UV, ND and diffusers. I trust the company's products. This is excellent value for money compared to much more expensive polarizing filters such as those from B+W and Hoya while offering virtually equivalent performance. Fantastic! It's an unequivocally high FIVE STARS from me, along with my honest and very warm recommendation. Improve your photography and vlogging! get this! *If you found my review helpful to you, please let Amazon know by clicking the HELPFUL button below!

A product that looks great in construction, has a nice sharp lens and the CPL works great. Due to the slim design, the filter does not look like it is mounted. Great!

This one is better on cloudy days. I have several polarizing filters from K & F. I think they have made me a better photographer. It's been snowing lately. I wanted to take photos of the untouched snow. The sun came out and the shine was reflected in the snow. This filter toned down the glare and gave much better shots. Now, without this filter and my black K&F filter, I never head out to the day.