Canon has added focus breathing support via a firmware update to the following lenses.
- RF14-35mm F4 L IS USM Firmware Version1.0.3
- RF15-35mm F2.8 L IS USM Firmware Version1.0.8
- RF24-70mm F2.8 L IS USM Firmware Version1.0.8
- RF70-200mm F4 L IS USM Firmware Version1.1.1
- RF70-200mm F2.8 L IS USM Firmware Version1.1.4

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