10-03-2024 05:16 PM - last edited on 10-03-2024 05:33 PM by Tiffany
Hi everyone,
I’m having an issue with my Canon R6. I’m using it with an RF to EF Adapter, a 1.4 Extender iii, and an EF100-400 mk ii lens. When I first turn the camera on, everything works perfectly, and it focuses as it should. However, after a few shots, it suddenly switches to manual focus (MF) on its own.
Has anyone else encountered this problem? Any ideas on why it’s happening or, better yet, how to fix it? I’d appreciate any insights!
10-03-2024 05:48 PM
Does the lens work correctly with the teleconverter removed. Also if you have a DSLR will it work correctly on there. Does the camera still report aperture when this happens or does it report F/00 or F--.
10-03-2024 06:05 PM
Hi deebatman316,
when I take off the extender, the ef100-400 mk ii works and focuses as it should. That’s why I’m thinking the issue is with the extender.
10-03-2024 06:13 PM
Does it work on a DSLR camera properly. To remove the adapter from the picture.
10-04-2024 02:43 AM
If you can, then try swapping the mount adapter out for another one. I have seen odd issues with a Canon mount adapter in the past myself.
10-04-2024 11:23 AM
"I’m using it with an RF to EF Adapter, a 1.4 Extender iii, ..."
Both are Canon brand accessories? If not that is your problem.
09/26/2024: New firmware updates are available.
EOS R5 Mark II - Version 1.0.1
EOS R6 Mark II - Version 1.5.0
07/01/2024: New firmware updates are available.
04/16/2024: New firmware updates are available.
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