EOS R5 Mark II won't change aperture on RF 24-105 f2.8

[reginaldwalton]

Hello, I have the Canon R5 II, along with the RF 24-105 2.8 and for some reason, I am not able to adjust the aperture in either manual or Aperture Priority mode from the camera. I can change the aperture via the dial on the lens, but not from the camera itself. I don't have any seetings for the control ring or the buttons on the lens (I actually have them off). This only happens with the 24-104 2.8 lens and not any of my other Canon lenses. 

Any idea why I can't change the aperture via the camera when this lens is attached? I didn't have this issue with my R5.

[deebatman316 · Accepted solution]

Make sure aperture ring is set to A on the lens. The aperture ring overrides the setting on the camera.

[reginaldwalton]

Ahh!I didn't realize I had changed that and that was the issue. Thank you very much!!

[Surenz]

I am experiencing the same problem. How do I set the aperture ring to "A"? I noticed there's an "A" on the lens ring, but I can't find any button to set it. Is there a video or PDF available? It would be great if you could provide some instructions to fix this aperture issue with the R5 Mark II when using the RF 24-105mm f/2.8 lens.

Thank you

[reginaldwalton]

There is a little lever labeled Iris. Select that and move the Aperture ring to the A position.