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EXIF Viewer by

ISO (Photographic Sensitivity)

The sensor's sensitivity setting. Higher ISO brightens the image at the cost of more noise.

EXIF tag ID
0x8827
Group
Exposure
Example
ISO 100 (bright daylight) · ISO 3200 (dim interior)
Editable in EXIF Viewer
Yes

What iPhone writes

Chosen automatically; typically 32–64 outdoors, up to 6400+ in Night mode.

What dedicated cameras write

The set value; extended values like 'Lo 1' are usually recorded in maker notes.

How to view ISO (Photographic Sensitivity) 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 Time (Shutter Speed) — How long the sensor was exposed, in seconds.
  • F-Number (Aperture) — The lens aperture as an ƒ-stop. Smaller numbers mean a larger opening: more light and shallower depth of field.
  • Exposure Program — The exposure mode: manual, program, aperture priority, shutter priority, or a scene mode.