Great quality and fits my iPhone 14 pro.

I got this to keep in my car for when I need a tripod in a pinch, even for my iPhone (it comes with a phone mount adapter). It's plenty sturdy even for a DSLR with a heavy lens. I think it will serve me well in the field.

I have a Pentax SLR, the filter fits my lens well, you have to choose the diameter carefully before ordering, otherwise you are good for a mount set. The filter fits the whole lens well, no black circle in the photo. it is of good quality. It comes with a small rag to clean the cleaner as well as a protective cap to avoid rays.

I'm used to using filters with the SLR. With the RX100n7, this is only possible with a magnetic filter adapter, eg Carry Speed ​​Magfilteradapter 52mm.
The polarizing filter from K&F Concept has proven itself on a hiking holiday in Italy. The image result is very good, the quality of the filter is excellent. Together with the filter adapter you get results like with the big SLR cameras. (It's also due to the quality of the RX100m7)
As I said, the image result convinced me that it wasn't a bad buy.
Can recommend the K&F Concept D-Series Pro 52mm Slim circular polarizing filter at any time.

The endoscope is a super solution for the DIY sector. In the professional field you might get the replacement battery for this price. Here you get a function in the form of a useful view, e.g. into the engine compartment or into very crooked spaces, which no smartphone camera can match. This saves a lot of time because major dismantling work can be avoided. The picture is significantly better than expected and both photos and films can be made so that you get a good overview of the condition or function of the objects that are simply to be examined, repaired or adjusted. The lighting is excellent. With strong reflections, it is very good that the light can be dimmed. I fix the endoscope with a collet so that steady pictures can be taken. You should also pay attention to well-cleaned lenses.

Perfect for DIY enthusiasts - helps in various household situations.

Works perfectly. The focus range is like the old SLR. The Ricoh lens creates a nice look with the S1R thanks to the adapter. Criticism: you could have installed a rubber seal towards the camera, but at this price I'd like to turn a blind eye.

It is a manual lens adapter.