The K&F Concept Tripod Adapter is a versatile and sturdy addition to my photography setup. It fits both my tablet and phone securely, making it perfect for content creation or video calls. The adjustable clamp is easy to use and the build quality feels sturdy due to its solid construction. The multiple mounting options are convenient and allow me to use it with various tripods and stands. The additional cold shoe mount is a bonus for attaching lights or microphones. Overall, it's a reliable and functional accessory for anyone who needs a stable mount for their devices.

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.

The adapter does what it says 0 problems... On arrival the m42 mount was misaligned but this is easily remedied by loosening the 4 screws on the side and turning into position. But even if you don't, the adapter will work just fine.

The lens adapter is very well made and has hardly any play as other adapters are reported to have. The tripod mount is fixed to the adapter, not interchangeable like the original, but this also brings better stability, so from my point of view, better than the original. Focusing and aperture control works perfectly.

If the crush ring is not attached in the Lock position, the aperture blade will not move in the Open position. The EOS M-mount adapter is built better than the SONY E-mount adapter with just the narrower pin (laughs), but despite the fact that the body is too small, the lens weighs quite a bit. So if it is not an adapter with a tripod seat, the mount and the camera screw will be put under enormous stress. Most importantly, FD adapters don't require any tools, and there are few things that detach the tripod seat, so that's an issue.

Perfect service

First tripod for my iPhone. Love it!

As the title suggests, this is the classic M42 -> E-Mount adapter, it has no difference from that of the Neewer, only that the orange color matches perfectly with my A7M3 so I just took it for the fun of having everything matched.
it is built entirely of metal and in a month and a half of use it had no problem with ferrules, painting of any kind.
Personally I use it combined with a Helios 44/2, Jupiter 200mm f4 and a Tair 3AS 300mm and it does its job, including focusing at infinity.