Sony ILCE-1 a1 Help Manual page 183

Help Guide
Interchangeable Lens Digital Camera
ILCE-1
α1
Face Priority in Multi Metering (still image/movie)
Sets whether the camera measures brightness based on detected faces when [
MENU → (Exposure/Color) → [Metering] → [
1
Menu item details
On:
The camera measures brightness based on detected faces.
Off:
The camera measures brightness using the [Multi] setting, without detecting faces.
Note
When the shooting mode is set to [Intelligent Auto], [
When [ Face/Eye Prior. in AF] is set to [On] and [
Face Priority in Multi Metering] does not work.
Related Topic
Metering Mode (still image/movie)
Face Priority in Multi Metering] → desired setting.
Face Priority in Multi Metering] is locked to [On].
Face/Eye Subject] is set to [Animal] or [Bird] under [Face/Eye AF], [
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Metering Mode] is set to [Multi].