I've been using the K&F CONCEPT 58mm filter clip for some time now and I'm really pleasantly surprised. The best thing about it: You're not limited to a specific smartphone model. I change my cell phone occasionally and almost always use a case — and this clip is ideal for exactly that, because it can be adjusted quickly and is still stable.

The spring-loaded push button makes it pleasant to use: put on the clip, press, sit. No fumbling and significantly safer than many “tightening clip” solutions, which either slip or apply too thick. The silicone pad all around also ensures that the clip on the smartphone or case does not slip and does not cause scratches.

The 58mm thread connection is super practical because it allows you to use common filters. The set already includes a CPL filter — I use it most often: reflections on glass/water are visibly reduced and colors look richer, especially when taking pictures at the lake or taking pictures. The effect depends, of course, on the angle to the light, but overall you can clearly see the difference.

The set is also easy to take with you: lightweight, compact, with a bag and safety strap — this gives me additional security, especially when traveling.

Conclusion: For anyone who wants to take mobile phone photography more seriously without binding themselves to a single device (and especially taking pictures with a case), this is a clear recommendation. Stable hold, quick installation and a useful CPL filter are included.