I've read bad reviews about people getting the filter stuck or unscrewing during use. If you carefully turn it with the ring in the right direction you won't have any problems I would say. For me these work very well on the Sigma lens.

usually get a Hoya or other inexpensive UV filter to protect my lenses. I saw this was a Vine item and thought I would give it a try. In terms of quality, I would say they feel more substantial than some of my older Hoya filters in terms of the sturdiness of the aluminum ring. It has good knurling and is a flat black anodize or paint. It provides good traction for your fingers to screw on or unscrew the filter or rotate the circular polarizer. The UV filter is very clear with no visible defects and, as far as I can tell, has no effect on the image quality or exposure values of my camera. That's exactly what I'm looking for in a UV filter. Just something to protect my lens. The polarizer is similarly well made. It rotates smoothly and does exactly what a polarizer should to reduce glare. For the price I am impressed and will order from K&F again.

These filters are great for a mirrorless lens for my Sony. Quality construction and it's nice to have both UV and CPL in one set. It would be nice to have a case for them, but they're a solid value that does the job well.

The build quality and clarity of both filters is excellent and they work well together. The adjustment on the polarizer is a bit tight, but I prefer it to be too loose. I can't tell any difference between these filters and my high-end filters.

These are actually two filters, one UV and one circular polarizing. You can use them separately or stack them on top of each other. These are well made filters, the ring is very small so they don't cause vignetting even when stacking both filters on wide angle lenses. These screwed onto my lens smoothly and stayed secure. They only reduce the value a little and once screwed on there is an outer ring that allows you to rotate the polarizer to get the best effect. The UV filter helps reduce atmospheric haze and makes the air appear clearer. Many people also leave a UV filter on to protect the front element of their lens from dust and splashes. The circular polarizer reduces reflections from water, glasses and windows. Because it reduces reflections, you can see right into the water, making it look clearer and cleaner. It also helps provide a clearer sky image when photographing outside. This is the “K” series filter, they also have a “D” series. I'm not sure what the exact difference is between the two, as K&F's own website doesn't really explain it. As far as I can tell, the "K" series (this one) are slightly cheaper with fewer layers of coating, the K series doesn't seem to have a water and oil repellent coating. Definitely well made filters that do the job.

know KF Concept from both their filters and their lens adapters. They have a variety of other photography products. Since I am familiar with these, I was happy with ordering this product. When I ordered it I thought it was *just* the circular polarizer. I was surprised and pleased to find that it was a combination. For me, 62mm makes the polarizer useful for multiple lenses. The multi-layer UV filter was a bonus. The combination is safely protected. In use, the polarizer reduces glare from surfaces and deepens the blue in the sky. That's what you expect, yes? The beauty of this is that the multi-coating essentially eliminates any glare from the filters themselves. This coating also makes them easy to clean and keep clean. They are made of optical glass, so I am confident in their durability. The knurls on the filter rings make them slightly larger than the lens mount they are installed on. I've had problems with this on some vintage lenses, but not on the modern AF lenses I got these for. Overall, I recommend this combination for both function and excellent value for money.

This does exactly what it says on the tin. It helps reduce glare on windows, protects the camera lens and slightly improves saturation. Compared to some of my other CPL filters, they have slightly more saturation improvements than this filter. I didn't experience much vignetting. My only problem is that the lens filter sometimes unscrews when rotating, but I'm sure I'll get used to it as I use it. All in all, it's not a bad price for a UV filter & CPL filter. I like some of my other CPL filters more, but this wasn't bad by any means.

Not only a protective shield for the lens, but also on water, a very good way to darken the shine.

I used it on my Panasonic 45-150 lens, which is the lens I use most outdoors. I misunderstood when ordering that the UV lens is also half of the polarizer, but it works well. The UV filter fits easily and smoothly into the lens, the polarizer attachment filter fits well and works well at an angle to reflective surfaces. The images I took with this using my Panasonic GX85 came out well with no optical aberrations. There are better quality filters, but they cost much more - this set is the perfect combination of price, quality and optical quality. I am very happy with it.

Of course you don't really need a UV filter anymore in the digital age, I see it more as a protection for my lenses.

As you can see in the pictures, there are no reflections or changes in the picture. I'm super happy with it and would buy it again. The storage box was a perfect fit and also perfect for removal without leaving any marks