Focal Length
The lens focal length in millimetres at the moment of capture, not adjusted for sensor size.
- EXIF tag ID
- 0x920A
- Group
- Exposure
- Example
- 6.765 mm (iPhone main camera) · 100 mm
- Editable in EXIF Viewer
- Yes
What iPhone writes
The physical focal length of the module; see Focal Length in 35mm for the familiar number (24 mm, 13 mm, 77 mm…).
What dedicated cameras write
Actual focal length; for zooms, the position used.
How to view Focal Length 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
- Focal Length in 35mm Format — The focal length converted to a full-frame equivalent so different sensor sizes can be compared.
- Lens Model — The lens used, as reported by the lens electronics.
- Digital Zoom Ratio — How much the image was cropped and enlarged digitally. 0 or 1 means none.