Canon has released new firmware for the Canon RF 50mm f/1.2L USM to improve performance with the Canon Cinema EOS C70.
Canon RF 50mm f/1.2L USM
Firmware Version 1.0.5 incorporates the following improvement for the phenomenon:
Reduces image noise when performing high sensitivity shooting with the RF50mm F1.2 L USM lens attached to the EOS C70 camera.
Download firmware v1.0.5 for the Canon RF 50mm f/1.2L USM