This isn't my first EF to EF-M lens adapter. The build quality of this one is definitely better than my older one and the auto-focus is great and speedy. You can remove the bottom bracket that connects to tripods which is usually an annoyance for me but I can see some using that piece.

My only issue with this adapter (which might not even be an issue) is that it's a bit tight on the lenses. When I connect it to my camera, it's fine, but when I attach a lens to it, I can hear almost a 'grinding' noise. That might just be the connection prongs on the adapter itself, however I don't hear that same noise on my previous adapter which makes me believe it's a little on the tight side when connecting a lens. Overall, I'm satisfied with this brand's adapter and have bought several lens filters K&F as well.

Perfect this is what i was looking for. works great

I used this adaptor to connect my Canon ultrasonic telephoto lens to my new Canon mirorrless M200 camera; the adaptor did fit the camera and the lens like a glove with full function, I gave it 5 stars

My experience with this EF to EF/EOS M Adapter has been nothing short of great. Despite its reasonable price, it performs exceptionally well, especially when compared to other off-brand adapters. Interestingly, I have noticed that this adapter has made my autofocus function faster than before. I had not expected this, but it has been a pleasant surprise. Additionally, although I initially did not take the Image Stabilization feature seriously, I have been impressed with how well it performs.

It provides a high level of stability, which has helped me take clear and sharp photos in various settings. I have used this adapter in multiple settings, including weddings, headshots, and family portraits, and the results have been nothing short of great. With its exceptional ease of use, I have been able to capture quick moments with stunning clarity and detail. Even in a super low-light indoor setting, I managed to take great photos without using any flash.

The adapter is of good build quality and feels sturdy when I hold it. I have been using it to mount my EF lenses to my Canon EOS M camera, and it has been a game-changer for me. The adapter’s compatibility has allowed me to use my existing lenses with my new camera. The adapter fits both the camera and lens securely, and I never have to worry about any looseness or instability while using it. I can confidently say that this adapter has added a new dimension to my photography experience.

I have not noticed any loss in the quality of my photos while using both macro and telephoto ranges. The image stabilizer and autofocus features worked flawlessly. The adapter is equipped with metal fasteners for both the camera and lens sides and has gold-plated contacts. Additionally, the adapter allows me to attach my tripod to it, which helps to balance the weight of my super-telephoto lens if I wish to use that.

In summary, this is an excellent method to make the most of a range of EF lenses without breaking the bank. Since I started using this approach, I have been able to use my preferred lenses with my EOS M camera, which has significantly broadened the use of my DSLR. I highly recommend it.

Hope this review helps someone out.

Great affordable alternative to Canon converter. Tested with Canon 16-35 f1.8, 70-200 f2.8, 32 1.4, 50 1.8 and Sigma 150-500. All worked with no issues with autofocus. Overall l, really happy with this converter!

Af works like the original, the build is nicer than the canon one in my opinion. If it had weather sealing it would be nicer and a no brainer. It has 4 stars because there is slight play in the adapter, this is mainly from the ef side. It doesn’t affect usage, just a feel and ascetics thing. Apart from that would recommend this adapter as a good alternative to the canon. Would rather save the 90 and buy this for sure.

This adapter works great with the collection of Canon EF lenses that I have to an EF-M mount body. The cheap adapters I have tried does not do AF, but this is not one of them. This adapter has got full AF support with most lenses I tried with which is only a few that I have in hand. The build quality is excellent and it comes with the mount to go straight into the tripod if mounting a heavy lens to balance out the weight. It came with an allen wrench for the mount screws. I wish this came in a ready to carry pouch or case so the adapter and wrench can stay together.

Pros:
- Very well built adapter.
- Supports AF.
- Metal mounts on both ends and mostly light weight metal body.
- Tripod mount holes right on the adapter that also supports heavy lens mounting. Comes with the allen wrench.
- Very nice packaging with foam padding inside.

Got this since I have a bunch of EF lenses lying around, and it is a nice option not to empty my wallet on the expensive RF lenses. I am using this with my Canon R5 and R8 bodies. This adapter is a solid alternative to the OEM mount that works well with the Canon EF 70-200mm 2.8 L lens and Canon EF 50mm 1.2 L lens. Pretty happy with it so far, and I can say that I can recommend this for anyone with EF lenses with an RF-native camera body, especially for under 50 dollars!

I got this adapter to mount the only EF nifty-fifty lens that I own on my Canon EOS R100 camera. The adapter does the job, autofocus works, and transmits EXIF information. No issues mounting the adapter to the camera or mounting the lens to the adapter.

The adapter with end caps came in a nice box with an allen key wrench and a user manual. The tripod foot can be detached. The adapter is made of metal, looks and feels nice but does not have weather sealing. It weighs around 150g. So, works well with a light lens on the compact body.

I prefer using native mount lenses. I also shoot with Nikon Z and Sony mirrorless cameras. So, for occasional use, this adapter works. Reliability is unknown at this time. Over the years, I have got a lot of K&F products, they all have turned out good and hope this one will as well.

Compatibility and Performance: The adapter fits perfectly on my EOS R6, and attaching my old EF lenses was a breeze. It was a delight to be able to use these lenses on my newer camera. The auto-focus functionality with my EF lenses worked well, which I was concerned about initially. This seamless integration has significantly enhanced the versatility of my camera setup.

Build Quality: The adapter feels well-crafted, made of what seems to be high-quality metal. The plastic caps also exhibit a good build quality, adding to the overall sturdy feel of the product.

Ease of Use: Both attaching the adapter to the camera and the lenses to the adapter were straightforward processes. I encountered no difficulties in handling or operation.

Mystery Foam Cutout: Upon unboxing, I noticed a foam square cutout that was empty. While it didn't seem like anything was missing, the purpose of this cutout remains unclear. It's a minor detail and doesn't impact the functionality of the adapter but I am curious If I am missing something from the package.

Overall Satisfaction: I am very pleased with the K&F Concept EF to EOS R Adapter. Its ability to bring new life to my EF lenses on an EOS R camera is great!