Sony A7RIII ILCE-7RM3A Operating Instructions Manual page 307

Help Guide
Interchangeable Lens Digital Camera
ILCE-7RM3A
α7RIII
Red Eye Reduction
When using the flash, it is fired two or more times before shooting to reduce the red-eye phenomenon.
MENU → (Camera Settings1) → [Red Eye Reduction] → desired setting.
1
Menu item details
On:
The flash is always fired to reduce the red-eye phenomenon.
Off:
Does not use Red Eye Reduction.
Note
Red Eye Reduction may not produce the desired effects. It depends on individual differences and conditions, such as distance to
the subject, or whether the subject looks at the pre-strobe or not.
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