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

Analogue lenses have character and charm - that's for sure. And they are often many times cheaper than their digital counterparts. So why not adapt the good "old glasses" to a new camera? I already own the Neewer adapter for my Minolta glasses and now I wanted to test this K&F lens adapter for my M42 lenses on my Sony a7III and a6300. Today I also added the Minolta(AF)-NEX adapter to continue using my old Sony A-mount lenses.

I placed particular value on the following two points: quality and function.
1. Quality:
At this price (Minolta AF or Sony A-Mount), you can expect a little more from a lens adapter. To get straight to the point - my expectations were fully met.
Packaging:
The adapter arrived very well packaged and, in contrast to the Neewer adapter, even has a resealable plastic box. In this you can transport or stow it very well when you don't need it. Because we definitely don't want too much dust getting into the adapter and then into the camera.
Adapter:
The K&F adapter is made entirely of metal (brass and aluminum + a few steel screws). It feels very high quality and you have the feeling of holding something solid in your hand. The thread is very clean and well made. My lenses could be screwed in and unscrewed again without jamming. That's the way it has to be!
The fit on my Sony a7III with E-mount connection was very snug and tight. There was no wobbling or sliding after the adapter snapped onto the camera. It was also easy to dismantle thanks to the grooves on the surface of the adapter. This was thought through and not just valued for the optics.
The aperture selection on the Minolta AF adapter works excellently and feels "full" and easy to use. The f-stops therefore sit correctly and are not accidentally adjusted.
2nd function:
The adapter actually only adjusts the back focus of the "old lenses" to the new camera. He does this job excellently! Focusing to infinity works perfectly and the images are not affected by any additional lenses. Of course it depends on the lenses what the end result looks like - in my case I have the Porst wide angle 35mm f/3.5, the Auto Exaktar 135mm f/2.8 and for the Minolta AF the Samyang 16mm T2.2 used (see sample images).
I'm really happy with the K&F adapter and I'm sure I'll still have a lot of fun with it and my old lenses. I would buy it again anytime.

Edit 03/04/2019: I've even bought the Minolta(AF)-NEX adapter because I've only had good experiences with the products from K&F so far and I wasn't disappointed this time either. Great product and thanks to the choice of aperture I can now continue to use my old Sony A-mount lenses.

I bought and paid for the K&F adapter as usual via Amazon, but I get the money refunded as a product tester. As always, my opinion remains independent and honest.

John from Photoscrubs

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.