K&F Concept 55MM Polarising Filter Circular Polarizing CPL, Ultra Slim, Japan Optics, Multi Coated (Nano-K Series)

New lens, new polariser. I have a couple of K&F polarisers and have no problems with those and I don't expect this to be any different.No problem with the threads, and a few test shots show no optical problems. Adjustment is smooth but may feel a little tight for some.

Seems to do what its supposed to as shown when used properly. Worked well enough with my Nikon 18-200mm zoom.I already had a CPL filter but mislaid it so I got this one.Likely one of the single most useful filters of all. I'm wondering now whether I should get one of the more superior CPL filters such as the K&F Concept 72mm Polarising Filter Ultra Low Reflection Circular Polarizing CPL, Ultra Definition, 28 Layer Multi Coated Polarized MRC Filter (Nano-X Series)...would it be that much better for the higher price?

This filter is most definitely worth your money it’s good quality and does what it advertises.BUTit always gets stuck on my sigma 18-50 mm F2.8 lens, you cannot remove the filter!I had to use some methods I found on google just to get the thing off my lens!!I’m not saying this might be the issue for you but it definitely is was for me.

Works perfectly for motorsport and automotive shoots. 10/10

Bought for a photography tour of Japan. Worked to meet my needs perfectly!

I brought this filter as I take a lot of landscape photos, countryside, water, rivers, lakes sea etc.This easy to use filter allows you to bring out clearer images and added contrast to your photos.Easy to use, and certainly good value for money.Only negative thing, I found as others have also commented in reviews, that the threaded ring is a bit tricky to attach to your camera. It feels quite “gritty” as you attach it.That said once it’s on, I don’t intend to keep removing it.I do however now have to find a replacement lens cap, as my current (Canon SC540HS) “grips” the internal diameter of the lens. With the filter in place, it doesn’t. So now looking for a 70mm push on lens cap.

It does the job as a filter and feels fairly solid, plus I like the pattern they've given the knurled edge which provides good grip. However, it's very stiff to rotate which isn't ideal for a CPL and the thread is very tight making it difficult to remove from the lens. A lesson learnt to stick with Hoya like I normally do and not try to save a few quid!

Tried multiple light settings , tripod, lens firmware update but the blur did not go away on my 70-200 mm Nikor lens.Tried without this and noticed that the photos are as sharp as ever and then only I realised it’s not the fault of the lens per se. It’s not fault of the filter ( made very well by the way ) either, it’s just how these filters work with a telephoto lens. Have requested customer support. Will update if I get help.Was able to return after using it for 5 minutes outside the standard return window. Would hate it to be gone to a landfill otherwise. K&F team supported with Amazon customer service.