EOS R6 Mark II: Error 01

[Gaby1]

I am using the Canon EF-EOS R Mount Adapter for my Sigma 150 - 600 mm lens. The AF menu defaults to MF which it doesn’t allow me to change. I suspect it’s a connection/contacts issue but it’s a brand new camera and a brand new adapter.

[deebatman316 · Accepted solution]

Have you tried a Canon brand lens to see it will work or not. The EOS R6 Mark II & EOS R7 are finicky with 3rd Party lenses.

[Gaby1]

No, I haven’t, but sounds like I might have to spend the money. Thanks for your fast response.

[deebatman316 · Accepted solution]

What I’m suggesting is to test the mount adapter out. To see if the mount adapter or the lens is at fault. It can be any Canon brand EF lens. I would also test a native RF Mount lens to see if it will communicate with the camera. 

[March411 · Accepted solution]

I had issues with my Sigma 60-600mm and it ended up needing a firmware update. I had to pick up a dock but it was worth it, resolved all my issues. If you are located in the states I can send it your way if you don't have one. If you are interested shoot me a DM.

[Gaby1]

Yes, I tried it with a Canon 70-300 mm lens, also with my brand new EF to EOS R Mount adapter; didn’t solve the issue.

[Gaby1]

Thanks Marc. I just received the dock I bought for upgrading the Sigma firmware. Will try it tomorrow. I am skeptical though since I experience the same autofocus/communication issues with a native Canon lens I just purchased. It’s an EF lens, so I am still using the mount adapter.

[deebatman316 · Accepted solution]

Which Canon 70-300mm lens. Canon has released 3 of those lenses one of which is an L model. This one is the easiest to identify out of the other two. The L model is painted white instead of black. The newer version II says “Nano USM” and has an LCD screen on it. The original lacks a focus distance window on it because it uses a cheaper Micro USM AF motor. It also doesn’t provide Full Time manual focus like the other 2 lenses. I have pictures below to help you identify your lens model. 

 

 

[March411]

Good luck Gaby although I would tend to agree with you if it is happening with other Canon EF mount lenses. 

I would go back to deebatman316 suggestion especially if you have a local retailer in your area that has an EF/R adapter and RF lenses. If it's the adapter and under warranty it should be easy to resolve.

"What I’m suggesting is to test the mount adapter out. To see if the mount adapter or the lens is at fault. It can be any Canon brand EF lens. I would also test a native RF Mount lens to see if it will communicate with the camera." 

[Gaby1]

I bought the 70-300 mm lens used, it’s not the L model, but the EF 1:4-5.6 IS II USM Lens. It’s the one from your last picture.