As a photography beginner, I wanted to test a cheap polarizing filter to see if it was for me and how it worked. In any case, I am very satisfied and really amazed at how intense the effect of the polarizing filter can be.
In the run-up I also read a bit about how it works and why polarizing filters don't always produce the desired wow effect - in the end it's all physics :-) I haven't regretted the purchase and I'm looking forward to trying out a lot more.

I bought this filter mainly for the summer season to be able to take some interesting pictures in nature. As a rule, I generally work with UV filters, also to protect the coated lenses of my lenses from scratches and dust. However, the use of a polarizing filter is more appropriate for bodies of water or on very sunny days, for example, as this reduces reflections from various reflective surfaces such as water, etc. Colors can also be worked out more clearly with it. I have tested the filter with 4 different Canon lenses and have not had a problem installing or removing any of them. The filter and the filter thread, in my case 58 mm, are high-quality and cleanly worked and the optical components also have no defects.

First of all, I assume that most people know what a polarizing filter is and assume this knowledge as a given. I found out beforehand on the Internet (reviews, tests, YouTube videos from the well-known tech and photo channels) what polarizing filters are available in which categories. And what are they good for anyway? I will personally use them for a tech blog to filter reflections from product photos, but also for nature photography. the K&F Concept polarizing filter is a bargain. Little loss of sharpness and it works and has defeated some models.

So ordered and tried it out with the 46mm during a walk along the Rhine. The filter fits the lens very well.

Water reflections can be easily filtered out with a slight twist. The same applies to metal reflections. Of course only to a certain extent, because at 3:30 p.m. in the blazing sun, physics also has its limits. This can be seen in the examples. However, reflection is massively reduced, especially in the case of polished chrome and paintwork, when exposed to direct sunlight in the summer light. Just like polarized sunglasses, which follow the same principle. Personally, I find that the filter conjures up a wonderful, strong blue gradient, for which the polarizing filters are also often used.

Overall a bargain and I think it was worth it. In addition to filtering water and light reflections, depending on taste and degree, the slight ND effect and thus color design is a creative thing.

Despite my skepticism, the polarizing filter gave me full satisfaction. If the filter is set correctly, the reflections have almost disappeared. Operation is child's play. The supplied plastic stand for transport is also practical.

This is my fourth, Vine and purchase of K&F filters after my first Vine listing. I found that it is a quality filter. I got this for the Tamron 70-300 that I got on Amazon a month ago. I didn't realize this one also came with a UV and had already gotten one. I used to only get B+W in my working days, but in retirement I have to budget more carefully. I've found that these K&F are virtually indistinguishable from them and these are now my filters.

These are perfect for my Canon 70D

Pair of filters that exactly match the description

I was looking for a cheap polarizing filter for my Canon 24-105 lens and tried this inexpensive part. Delivery arrived quickly and well packaged. The filter turns a light blue sky into a beautiful, almost dark blue sky. The colors are rich and have a slightly orange complexion. You have to sacrifice 2 apertures, which is common. The adjustment is severe but good. I'm very satisfied.

The pictures, especially in direct sunlight (yes, the photographer is free between 12 and 3... that's only true if you don't do it professionally...) are a lot clearer, more colorful, simply better. I cannot confirm that the filter produces vignetting, at least not on a 35mm lens with a 55mm filter thread, possibly on an APSC with a very short focal length.

I use the filter on my A7iii with the FE5018, the images lose a bit of sharpness if you look very closely, but this is completely acceptable for the price. I think this filter is very good for beginners or people who can do without some sharpness. It has an anti-reflective coating that I think is super good, water that only seems white becomes clear and transparent. My conclusion for the beginning is great.