Canon EOS R3 Advanced User's Manual page 743

• Shutter mode
Displayed if you select [Shooting] in step 9.
You can set the shutter method for shooting still images.
• Anti-flicker shoot.
Displayed if you select [Shooting] in step 9.
Enables you to configure anti-flicker shooting.
• HF anti-flicker shooting
Displayed if you select [Shooting] in step 9.
Enables you to configure high-frequency anti-flicker shooting.
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