- Just found this thread! Basically:
- Metabones Canon EF to RF T Smart Adapter has the BEST fit.
- My cheap Commlite CM-EF-EOS R lacked weather sealing in there design.

Seconding the recommendation above! If ur looking for budget value: • Meike MK-EFTR-A Auto Focus Mount Adapter - super solid fit.
• Yongnuo EF-EOS R Mount Adapter - amazing performance. Honestly, both save u a ton of cash!!

Honestly I am still pretty new to the R system but one thing I have noticed is that people really underestimate how much dust can get in there when you are messing around with adapters. Since you are worried about mount play, I have seen some DIY videos about tightening the tiny screws on the adapter if it feels loose but honestly that scares me so much. If you over-tighten them or use the wrong size screwdriver you could totally strip the heads and then you are really in trouble. I am always super CAUTIOUS about doing my own repairs because the R6 II sensor is so exposed when the lens is off and it makes me so nervous. Just a heads up that even if you find a cheap way to fix a wobbly mount it might be better to just send it back or have a pro look at it because messing with the internal pins yourself is basically a recipe for disaster imo. Just be really careful with those DIY fixes you see online because they can end up costing way more in the long run if you accidentally scratch the glass or mess up the electronic communication while trying to save a few bucks.

Same here!

Helpful thread 👍

Oh man, congrats on the R6 II!! Seriously, that camera is a total beast. I totally feel u on the EF glass struggle... honestly, since youre rocking expensive L-series glass, I’m gonna be super cautious here. I tried a cheaper Viltrox EF-EOS R Mount Adapter a while back and it felt a bit loose?? I was so worried about communication errors or the weather sealing failing during a rainy shoot. Here is what I recommend for total peace of mind:
* Canon Control Ring Mount Adapter EF-EOS R - This is AMAZING. Mapping the ring to ISO is a game changer for your workflow.
* Canon Mount Adapter EF-EOS R - Get this if you dont need the ring but want that perfect fit. I realy think the control ring version is the best bang for your buck because it basically turns your old glass into modern RF lenses. Third-party ones are fine for hobbyists, but for L-glass? Stick with official stuff. Good luck! 👍

Bump - same question here

@Reply #7 - good point! Honestly i have been watching this thread and its kind of a letdown how complicated this all is now. You spend all that money on an R6 II and still have to worry about whether your glass is gonna wobble or fail. I have had issues with so many setups that were supposed to be perfect and its just disappointing when the gear doesnt just work. It really reminds me of my friend Mark who finally upgraded his kit last year for a huge wedding shoot in the mountains.

• He spent weeks reading every forum post out there.
• Bought a couple different options to test them out.
• Was totally convinced he had the perfect setup ready to go. Then he gets to the venue, starts unpacking, and realizes he actually grabbed the wrong camera bag from his studio. He had all his fancy new lenses but absolutely zero ways to actually mount them to the body because the adapters were still sitting on his desk at home. He ended up having to shoot the whole ceremony on a backup crop sensor body with a kit lens because he just forgot the most important piece of the puzzle. It was a total disaster for him, poor guy. Just goes to show how much of a headache this stuff can be when youre trying to get everything perfect... let me know if you need anything else tho!