Metering Mode

How the camera measured light: across the whole frame, weighted to the centre, or from a spot.

EXIF tag ID: 0x9207
Group: Exposure
Example: Multi-segment · Center-weighted average · Spot
Editable in EXIF Viewer: Yes

What iPhone writes

Multi-segment (matrix), or spot-weighted when you tap to focus.

What dedicated cameras write

Follows the metering setting.

How to view Metering Mode on iPhone

Open the photo in Photos, tap Share, then View EXIF (EXIF Viewer’s action extension). The field is listed under “Exposure”. Tap Edit to change it, or select several photos in the app to change them all at once. Or drop the photo into the free online EXIF viewer.

Related tags

Exposure Compensation (Exposure Bias) — How far the photographer pushed the exposure from the meter's suggestion, in EV.
Exposure Program — The exposure mode: manual, program, aperture priority, shutter priority, or a scene mode.