received a K&F Concept K-Series 62MM MCUV Pro UV filter free of charge. It is delivered in a stylish, silver-colored box with a K&F Concept imprint. In addition to the plastic box with the filter, you will also find a microfiber cleaning cloth inside. There is a QR code on its packaging that takes you to the K&F website. The filter is again in a plastic bag. I don't think that's bad, as it prevents contamination before use. Before use, the glass is also free of superficial fine scratches - I had that differently with significantly more expensive filters. So far I have no complaints about the function. I've always used filters to protect my old Panasonic FZ1000 because you can't just swap out the lens there. (I have had to change the filter used from time to time, quirks happen quickly in the heat of the moment.) The filter can be screwed onto the lens without any problems and does not interfere. It is often said that such UV filters affect the photos taken. I've never noticed this and should - if at all - only move in a maybe just measurable but not visible range. For only €11 I don't think you can go far wrong with the K&F filters. It is possible that some more expensive filters could be more scratch-resistant, €11 hurts far less when damaged than an expensive filter or even the camera lens. (I didn't intentionally test the scratch resistance though - I'll update the review if anything goes in one direction or the other.) For now, the filters get a full 5 stars from me.