https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577456#M39083 <P>Is there a button control on the camera body that can also control EC? &nbsp;If so, then the control on the camera will override the lens control ring. &nbsp;The camera will not permit more than one control to able to adjust the same setting.</P> <P>I have found success by programming the [SET] button for EC. &nbsp;I use multiple camera bodies have found using the [SET] button works on al of them. &nbsp;Hold the button pressed and turn the Main Wheel.</P> Tue, 02 Dec 2025 23:08:28 GMT Waddizzle 2025-12-02T23:08:28Z https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577432#M39078 <P><SPAN>I bought an RF 200-800 lens yesterday to go with my R6 Mark II. After putting the AF/Control/MF switch on Control, I went into the camera and selected "Customize Dials" then selected "Exposure Compensation" for the control ring. While holding the shutter half way down, the control ring does nothing. I have verified that "Exposure Compensation" is set. Does anyone know why the control ring might be non functional?</SPAN></P> Tue, 02 Dec 2025 19:51:32 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577432#M39078 WallyD3 2025-12-02T19:51:32Z https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577447#M39081 <P>Greetings,</P> <P>Not home at the moment but will be shortly and I can test with my R5 C / 200-800.&nbsp; By chance to you have BBF enabled?&nbsp; This would remove the ability to program EC to the Control Ring with half press shutter.&nbsp;</P> Tue, 02 Dec 2025 21:19:01 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577447#M39081 shadowsports 2025-12-02T21:19:01Z https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577456#M39083 <P>Is there a button control on the camera body that can also control EC? &nbsp;If so, then the control on the camera will override the lens control ring. &nbsp;The camera will not permit more than one control to able to adjust the same setting.</P> <P>I have found success by programming the [SET] button for EC. &nbsp;I use multiple camera bodies have found using the [SET] button works on al of them. &nbsp;Hold the button pressed and turn the Main Wheel.</P> Tue, 02 Dec 2025 23:08:28 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577456#M39083 Waddizzle 2025-12-02T23:08:28Z https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577531#M39108 <P>Thank you for the reply. It turns out that the control ring won't work if "Manual" mode is selected. When I select Av or Tv, it works fine.</P> Wed, 03 Dec 2025 18:33:31 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/RF-200-800-Control-ring-does-nothing-when-set-to-Exposure/m-p/577531#M39108 WallyD3 2025-12-03T18:33:31Z