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EXIF Viewer by

Lens Info (Lens Specification)

Four numbers: minimum and maximum focal length, and the maximum aperture at each end.

EXIF tag ID
0xA432
Group
Camera & lens
Example
24 24 1.4 1.4 (a 24mm ƒ/1.4 prime) · 70 200 2.8 2.8
Editable in EXIF Viewer
Yes

What iPhone writes

Present; matches the module's fixed focal length and aperture.

What dedicated cameras write

Standard on modern bodies. Useful to identify a lens when Lens Model is missing.

How to view Lens Info (Lens Specification) on iPhone

Open the photo in Photos, tap Share, then View EXIF (EXIF Viewer’s action extension). The field is listed under “Camera & lens”. 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

  • Lens Model — The lens used, as reported by the lens electronics.
  • Focal Length — The lens focal length in millimetres at the moment of capture, not adjusted for sensor size.
  • F-Number (Aperture) — The lens aperture as an ƒ-stop. Smaller numbers mean a larger opening: more light and shallower depth of field.