Like many of you, I spend considerable time researching before I buy an item. I was torn between this adapter and the Canon one for my new Canon M6 camera, which was purchased for a trip of a lifetime. The reviews swayed me, and I put it through a bit of testing today.First, the lock-up between the adapter and camera is solid, and has no wobbling like purchasers of other brands reported. Solid and stable. Connecting several of my EF lenses, both Canon and Tamron, all yielded great quick auto-focus and stable lockup. I took several dozen pictures from varying distances, and all yielded very acceptable results.The lenses search a bit more connected to the adapter when using automatic focusing and the automatic camera setting than on my 5D Mark II, or using a native EF-M mounted lens on this camera, but I rarely use automatic anyway. Further, even though they searched, it was a quick focus when I kept the camera and lens stable. More than acceptable to catch a quick picture that simply can't be duplicated.I can't speak to the long term durability, but it has a solid build, and was well packaged unlike many off brand purchases I have made in the past. I have confidence in this. Enough that I'm flying half-way around the world and taking pictures in a place I'll likely never return to in my lifetime.Well done to the manufacturer, and I can solidly recommend this for your use. I paid full price, and would again.

My old (1987) Canon EOS has wonderful lenses that I didn't want to give up. The adapter answered any questions I had about not being able to use them. Arrived quickly, fit very easily and well and was well priced.What else could I wish....

After upgrading to the R6MarkII I was not looking forward to replacing/upgrading all my EF glass, but this little gem has so far performed flawlessly! AF works as expected, but I'll check back in if any issues arise. Otherwise, I see no reason to spend all that money on Canon's equivalent solve. Highly recommend.

This adapter is built like a tank and works perfectly on my Canon M50 with EF lenses. I've also tried it with an EF-S lens, and while it functions OK, the auto focus seems to constantly be searching for the right focal point. I tried it on several settings and turned off the continuous autofocus in the M50 body, but the lens still constantly tries to adjust focus. If I switch to manual focus, the works perfectly. Ironically, the best performance I've had is with my oldest lens -- an 75-300 mm EF lens that I originally purchased for an EOS Rebel SLR (film camera) about 25 years ago. I used it to shoot my daughter's soccer game, and it performed like a champ. So if you have a Canon mirrorless camera, here's my advice for rounding out your lens collection -- buy this adapter and then buy a bunch of older EF lenses. You'll be able to build quite a collection of gear for less than the price of one EF-M lens. HOWEVER, if you're planning to do video, the EF-M lenses with the STM motor are very nice. They're very lightweight, smooth as butter and nearly silent. The only drawback is that they're a little "plasticy" and don't feel as solidly built as this lens adapter.

It's a perfect union between my new camera body and my older lenses. My automatic lenses still work normally.And it was much cheaper than buying the name brand product.

This was exactly what I needed when I upgraded my camera from T3 to R50. I still have two lenses that I wanted to use without paying for new lenses and this did the trick. This was easy to install or seat on my camera and then place the lense. Literally saved me $175 minimum, easily by purchasing this adapter. So happy with this purchase!

Do not buy this cheap adapter. The fastener part broke after just a few uses, and the screw was almost instantly stripped. I'm out $50 for a useless, cheaply-made part. Look for another brand; this one is junk.

I briefly used this adapter with a couple of EF lenses on my Canon R7. I ended up buying the Neewer Adapter with the Control Ring -- it was on sale so the extra cost for the extra feature made the difference.Bottom line this is a very good adapter -- just missing the control ring.

I've been using the CM-EF-EOS adapter on my Canon M100 for several months now, pairing it with a variety of EF and EF-S lenses. Here's a detailed overview of my experience:The adapter is constructed from solid metal, which gives it a sturdy and durable feel. When attached to the camera and lenses, it fits tightly and securely, ensuring no wobble or movement. The tripod mount attachment is also very robust, providing a stable platform even for heavier lenses like the Canon 70-200mm F4 L telephoto lens. However, some users have reported issues with the tripod mount being loose, but I found that tightening the attachment screw resolves this problem effectively.In terms of performance, the adapter does an excellent job of translating all camera and lens functions seamlessly. The autofocus works flawlessly, and there is no noticeable light leakage. This is consistent with my experience across various lenses, including Canon, Sigma, Tamron, and Tokina models. The adapter maintains the integrity of the autofocus system, aperture control, metering, IBIS, and EXIF information, making it a reliable choice for both photography and videography.Weight Considerations:One of the main drawbacks of this adapter is its weight. While it adds a bit of heft to the camera setup, this is a trade-off for its solid construction. For users of mirrorless cameras like the Canon M100, which are designed to be lightweight and portable, this can be a significant downside. Holding the camera with one hand becomes challenging, especially for those with smaller or less strong hands. This is an area where the manufacturer could improve by using lighter materials without compromising on durability.Stability Issues:While my overall experience has been positive, there are occasional reports of stability issues. One user mentioned that the adapter's tight fit sometimes causes the autofocus to stop working, which can be resolved by adjusting the lens mount. This suggests that while the fit is generally secure, slight play can affect the communication between the camera and lens. It's important to ensure the adapter is properly seated and secure to avoid such issues.Comparison to Other Adapters:Compared to Canon's own adapters, which are often out of stock, the CM-EF-EOS adapter performs on par in terms of functionality and build quality. The autofocus speed and accuracy are similar, and there is no noticeable difference in image quality or light leakage. This makes it a great alternative, especially given the affordability and availability.Conclusion:Overall, the CM-EF-EOS adapter is a solid investment for Canon mirrorless camera users looking to utilize their existing EF and EF-S lenses. Its robust construction, flawless performance, and secure fit make it a reliable choice, despite the added weight. For those who can manage the extra heft, it provides excellent value and functionality, ensuring seamless integration with a wide range of lenses. Just be mindful of potential stability issues and ensure the adapter is securely attached to avoid autofocus interruptions.Rating: 4.5/5I hope this review helps you make an informed decision about the CM-EF-EOS adapter. If you have any specific questions or need further details, feel free to ask!

Adaptor is working good and auto focus also pretty well , good alternative to canon adaptor on lower price

Nothing comes close to this for quality and value for money.

It’s perfectly fit for my canon m50 mark iiPicture quality and auto focus is good..this is the good product with reasonable price

Acheté pour mon Canon R5 pour monter mon parc objectif EF-S. Fait très bien le travail. Satisfait.