For the price it is very good

Love the item and delivered very quickly thanks

K&F concept has different type of filters lines. This is more of a budget filter compared to their more expensive nano x pro line. Not sure why this item is marketed as 8K, but there is no improvement in image quality except for what CPL does. I did notice a bit of a color shift while using this filter, but if you use a color correction chart to color correct then you should be ok. If you are in a budget and looking for a decent CPL filter, give this a try. Slim filter and easy to put on your lenses without any issues.

perfect quality, great value for money and performance is easy to use. Great for beginners but don’t screw too tight onto the lens, not the filters fault.

K&F has just been killing it with their lens filters recently. This lens filter has a permanent spot on my F/1.4 lens and does such a good job filtering out plane polarized light. Whenever I'm shooting something that can experience a lot of glare or has windows or water in it having this circular polarizing filter really just improves the fidelity of the resulting image to a large degree. You don't have to deal with annoying sun glare that tends to wash out your photos and you can really get a really nice clear photo of whatever you're shooting especially if what you're shooting is outside in the middle of the day. I highly recommend this filter to pretty much every single photographer as they can improve their photography with it. I don't go anywhere without this filter.

works great, i order most all my filters in 82 except for some that live on certain lenses. does its job really well, i've enjoyed what i've made with it.
hey K&F! I LOVE your stuff!

So this polarizer is pretty good. It's good glass. The polarizer thingy works tons with a cleaner a case and a cap that comes in very handy. Easy to put on And off. worth it. Always good to have!

In general - I'm not a big filter guy. I don't even like using the clear UV filters unless I'm outdoors on a windy day. The reason? I want to get as pure an image captured as possible - and every piece of glass you add affects the final capture.

Having said that, there are two filters which can't be reproduced in the post-processing: neutral density filters and circular polarizing filters. Neutral density filters allow you to use a shutter speed that you would otherwise be unable to use - and circular polarizers allow you minimize glare.

In both cases, the filters will cause some color shifting - and cheaply manufactured filters are notoriously the worst. I found this K&F circular polarizer to exhibit minor shifting which is difficult to perceive for online work - and can be adjusted easily using a color checker like x-rite in post if precise color is desired.

Filters that have minimal color shift tend to be very expensive - and therefore K&F's offering helps to stretch your photo dollar with only a minor level of inconvenience. The construction is good and the filter is thin thereby helping to minimize vignetting - though you can help minimize vignetting by simply ordering a larger size filter along with a set of step up/down adapters.

Overall I give this five stars for a superior product at this price point. Recommended!

K&F filters; you get great value. I'm in the habit of collecting the largest filters I use, currently being 82mm and 95mm, as I've got step-down rings for whenever I switch to a lens with 77mm. I realized I was missing a 82mm circular polarizer, so I had to round out my collection with this one from K&F. Works as expected. Standard loss of light. No obvious degradation of picture quality, but make sure to keep the filter clean.

It does what it is supposed to do. Optically I have not seen anything that concerns me. I have not really pressed it when it comes to reflections, but with a lens hood that isn't a huge factor. It is easy to turn, but not so easy that it spins on it's own. CP is one of those things that is much better to get right in the camera vs editing it in later... and this is a good piece to do that with.