Solution
Compatible lens list for [Electronic full-time MF] are shown below.
RF70-200mm f/2.8 L IS USM (Firmware Ver 1.1.0 or later)
RF100-500mm f/4.5-7.1 L IS USM (Firmware Ver 1.0.9 or later)
EF400mm f/2.8L IS III USM (Firmware Ver 1.1.2 or later)
EF600mm f/4L IS III USM (Firmware Ver 1.1.2 or later)
NOTE
