In addition to the Kiwifotos lens filter adapter for my Sony RX100 V, I bought this graduated neutral density filter from K&F Concept after having had very good experiences with other products. I keep reading that the filter can't be unscrewed. I can't confirm that. At least for the 52 mm size I ordered.

The practical test is convincing. It's not sunny at the moment, but clouds are often difficult to capture, even in heavily overcast weather. I hope you can look through the images in the correct order. For someone who knows what they're doing, it should be obvious: The third image is pure, without the filter. In the fourth, I tried to improve this image in RAW post-processing, and you can see that there are still some burnt-out areas. The first image is with the filter, and you can already see: The clouds are already more detailed. But the window frame also naturally darkens with it. The post-processing, which can be seen in the second image, requires more effort for a scene like this. But I think the result is impressive!

As with the other K&F filters, I didn't notice any color casts, vignettes, or anything similar.