It screws on smoothly but I found it a little harder to unscrew. Not that unusual for new filters – especially ones like this where the lower, stationary ring carrying the threads is very narrow. Hard to get a grip on it between the camera lens and the filters outer, thicker rotating ring. If you have a filter wrench it will make that easier.
It has outer threads so you can stack filters. The outer ring rotation is a bit stiff, but then, new lens. Given the price, I doubt that the build quality is equal to some of the big-name manufacturers, but if you can’t see the difference, why pay the difference? Maybe a pro with pro equipment could identify some contrast or color balance issues, but I’m just a casual photographer.
The accompanying lens cap is unnecessary, but it’s hard to have too many spares! It’s also one of those ones you can get on and off by squeezing the little nubs in the center of the cap which makes using it with a lens hood more convenient. Spare microfiber cloths are okay by me also.
No reason so far to take away any stars from the rating.

This does what it's supposed to and cuts out glare and reflection. This 52mm version fits my son's camera well. He spent a lovely afternoon photographing things along our local waterway with it and said it worked brilliantly. You can rotate it to get the best effect and it has a sort of rubbery edge that feels good when you rotate it without having to take your eyes off the subject. The lens cap is sturdy and fits well. It comes with a flat plastic case for storage, a small lanyard and a lens wiper. Good value at around £14

This is the K&F 77mm polarizing filter that I bought primarily for my Canon 24-105L. I'm impressed with the optical quality, clean neutral color, and effectiveness of the polarizing effect. The cap works well and it also comes with a cleaning cloth. Considering the relatively low price, it seems like quite a bargain.

use this filter on my Fujifilm X-S10. I can't fault it. The short thread is perfect so it attaches to my lens with no problem. It's a thin filter so it doesn't stretch the lens much at all. The polarizing feature works exactly as it should. The filter offers great value for money over more expensive brands. The only thing to note is that it comes in a large box, that is, a generic box that fits filters of all sizes. Since my filter is a 52mm filter, it is relatively small, so the box seems unnecessarily large.

Filters can be very expensive, but this is a high quality filter that protects the lens and enhances the image. I would happily purchase more from this brand in the future.

I've recently started getting a visit from a woodpecker in my garden and have always wanted to take a photo but the reflections from the window always ruin the shot. I tried this polarizing filter today and it's amazing how much of the reflection it filters out. The images are much clearer with no haze and I think this works well for quick pictures through the window. Now I just have to wait for him to come back and hopefully actually get a photo of him. The filter seems to be good quality and is fully coated and uses Japanese glass. With the filter on there is no loss of image quality or sharpness. It also improves the contrast of the sky and I can't wait to get out and properly test some landscape shots with it. Overall I'm very happy with the filter and for the price I think it's good value for money.

The "K&F Concept 67MM Polarizing Filter Circular Polarizing CPL, Ultra Slim, Japan Optics, Multi-Coated, with Lens Cap" came in a branded box. It was nice to find the filter in a hard plastic case for protection, with a lens cap already attached to the filter. I ordered this filter for a Nikon P900. With the lens cap still attached to the filter, I carefully screwed the thin filter into place. I then took a series of pictures to check its effectiveness, and have included two pictures of the original Nikon lens cap showing the difference. When attempting to remove the filter, I found that it was stuck, so I had to resort to a filter wrench to remove it. The reason it got stuck was because I was turning the polarizing ring clockwise and counterclockwise from my perspective behind the camera. I must have just caught the threaded ring with my finger as I turned it counterclockwise, just enough to lock the filter in place. Some suggestions I have from using the filter; 1. When installing the filter, leave the lens cap on as it gives a larger shooting area. 2. Only turn the filter clockwise when viewing it from behind the camera to avoid repeating my mistake and lock the filter in place. 3. Carry a suitable filter wrench when using one of these filters just in case it gets stuck. 4. If it fits a P900 and it gets stuck. Zoom the lens so it points out about 30mm then remove the battery without turning the camera off. This will stop the lens retracting when the camera is off and if the camera is left on it will stop the lens trying to counteract the movement. 5. The lens and cap are stored in a small cellophane sleeve inside the plastic case. It is best to leave the lens cap on and insert it so that the flap of the cover is on the same side as the lens cap. This virtually eliminates the risk of the sticky flap touching the exposed filter surface. The only thing that would make this filter better is some sort of cover for the exposed surface or attachment points to hold the filter in place inside the case.

This is an inexpensive Chinese-made filter that has a good standard of manufacture and a decent coating. I'm not going to waste your time telling you what a polarizing filter does - if you're here looking for one, you already know! What I will say is that if you don't already own one, it's a very useful addition to your kit, especially if you're shooting outdoors or shooting reflective surfaces. POSITIVES * Good optics * Coated * Inexpensive * Comes with case NEGATIVES * Adjustment is made difficult by the extremely thin ring * Rotation is a little stiffer than I like * Filter case is huge - too big for a gadget bag and doesn't close securely. The optics are better than many I've owned in this price range, so no complaints. This is an ultra-thin filter, which helps avoid the risk of vignetting. The downside is that this makes ring adjustment tricky, especially with the slightly stiff rotation. With the lead rotating, the filter can come loose unless it's screwed on very tightly, making re-triggering a pain. Also, the front thread is so short that you can only use the supplied lens cap rather than the better one that came with your lens. Vignetting is only really a risk with ultra-wide lenses, and with medium to long lenses I personally prefer a deeper filter ring to allow for easier adjustment and the use of my original lens cap. It comes with a free lens cloth and lanyard, but I'd rather the money was spent on a better case. I consider this a budget filter for wide angle lenses. It doesn't have the same quality or technical capabilities as my Lee polarizing filter, but that's in a whole different price and performance bracket. You usually get what you pay for in photography, and at this lower end of the spectrum, the price/performance ratio of the K&F Concept version is solid and offers good value for money. I give it a solid four stars. One person found this information helpful

And the filter is designed for landscape photography, especially in places where water or windows can cause unwanted reflections. It is also equipped with a lens cap and is perfectly compatible with the Tokina lens on which I used it. From a material point of view, we have high quality Japanese AGC glass with 18 layers of nano-coating, which the manufacturer promises to be resistant to water, scratches, mold and oil. Once assembled, it slightly increases the contrast, so it is not recommended to use it in dark environments. Everything is so small that it can be easily carried in the camera bag to use it when needed. I must therefore say that I was very satisfied with this filter, which I recommend to anyone looking for a quality product.

The polarizing filter is a good standard filter at a fair price, which fits in very well with the K&F portfolio. I already have several filters from there and am very satisfied every time. Price/performance is top.