Let me preface this review by explaining how I use these filters. I’m a wedding photographer and my wife is often my second photographer. I shoot Sony and she shoots Fuji. We also shoot wildlife and landscapes. Between the two of us I have purchased 23 K&F lens filters. Since we are working photographers, and rely heavily on our equipment, this UV filters are pretty important. I have had 3 lens front elements saved by UV filters, and because of that they have been worth it. These have been situations where a lens was dropped during a switch and landed on its UV filter, a cat pulled down a camera strap and the camera and lens landed right on its UV filter and another incident where I was taking a group photo in a church and my slung camera hit a corner of a chair’s back rest. These are all situations where the UV filter saved the lens. In all situations I was able to unthread the filter, pick up the glass shards and keep shooting. The first two situations the lens hood actually broke too, and in the chair corner situation, the corner was at a perfect angle to fit right in and get the lens filter.

There have also been situations where I’m shooting in the rain, or near a fountain and I can just wipe water off the front lens element with a microfiber cloth without needing to take them time and very carefully clean it.

Regarding this specific UV filter, it lives on a Fuji 35mm f2, and is thin enough to match the small lens body. It’s super low reflectivity means that it’s very hard to put it in situations where it has any effect on the image. Basically, it’s there for protection and has a near zero effect on image quality. Nothing more to ask for!

I’m including photos of portraits of my Kitten where she is directly backlit and another where the sun is just next to her. These were both shot a the Fuji 35mm’s maximum aperture of f2. In the photos where the sun is just to the side of the subject you can see purple blobs that are not present in photos without the filter. It was actually very challenging to get these purple blobs! I had to shoot a ton of photos into the sun, and the purple blobs were only present in very narrow angles. I’m not seeing any haze or loss of contrast and the only downside to this filter is those very hard to create purple blobs.