EXIF tag · ExifIFD

ISO

The ISO sensitivity setting (ExifTool reads ISOSpeedRatings / PhotographicSensitivity).

0x8827
Tag ID (34855 decimal)
ExifIFD
IFD / group
int16u
Data type
EXIF
Table

What ISO means#

The ISO sensitivity setting (ExifTool reads ISOSpeedRatings / PhotographicSensitivity).

Read, write and remove it#

# read
exiftool -ISO photo.jpg
# write
exiftool -ISO="…" photo.jpg
# remove
exiftool -ISO= photo.jpg
# all files in a folder, as CSV
exiftool -csv -ISO -r ./photos > iso.csv

In Python with Pillow:

from PIL import Image
exif = Image.open("photo.jpg").getexif()
value = exif.get_ifd(0x8769).get(0x8827)  # ISO
print(value)

Frequently asked questions#

What is the EXIF tag ID of ISO?

0x8827 (34855 decimal), in the ExifIFD directory.

How do I see ISO in a photo?

Run exiftool -ISO photo.jpg, or open the file's info panel in Lightroom, Photoshop, Windows (Properties → Details) or macOS Preview (Tools → Show Inspector).

Last updated October 03, 2026 · How we calculate · Sources