https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/EOS-R-Ra-Sensor-cleans-when-changing-lenses-amp-camera-is-off/m-p/321996#M75704 <P>WIth firmware 1.7 and the camera set to enable sensor cleaning at power-off (or set to enable which cleans at power on and off), the R runs cleaning when it's powered off and a LENS is detached or attached. I think this was a firmware bug introduced when support was added for the RF 600/800 lock ring position. Or was this added as a "feature" in 1.7 to try to ensure dust is removed from the sensor for every lens change?</P> Mon, 19 Oct 2020 16:46:53 GMT highdesertmesa 2020-10-19T16:46:53Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/EOS-R-Ra-Sensor-cleans-when-changing-lenses-amp-camera-is-off/m-p/321996#M75704 <P>WIth firmware 1.7 and the camera set to enable sensor cleaning at power-off (or set to enable which cleans at power on and off), the R runs cleaning when it's powered off and a LENS is detached or attached. I think this was a firmware bug introduced when support was added for the RF 600/800 lock ring position. Or was this added as a "feature" in 1.7 to try to ensure dust is removed from the sensor for every lens change?</P> Mon, 19 Oct 2020 16:46:53 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/EOS-R-Ra-Sensor-cleans-when-changing-lenses-amp-camera-is-off/m-p/321996#M75704 highdesertmesa 2020-10-19T16:46:53Z