Olympus ORF

File Format
Name	Olympus ORF
Ontology	Electronic File Formats Cameras and Digital Image Sensors Olympus ORF
Extension(s)	.orf
PRONOM	fmt/668

ORF, or Olympus RAW, is a raw image format produced by Olympus digital cameras.

Format

The format is TIFF-like, but with a different file signature. The full-size image is in the first IFD. There is also Exif data, with an Exif MakerNote.

Identification

Files begin with signature bytes 49 49 52 4f ("IIRO"), 4d 4d 4f 52 ("MMOR"), or 49 49 52 53 ("IIRS").

Software

• Refer to Cameras and Digital Image Sensors: Software

Sample files

• RAW-Samples: Olympus
• http://digikam3rdparty.free.fr/TEST_IMAGES/RAW/ → .../*.orf
• Olympus OM-D E-M1 Photos → Olympus OM-D E-M1 RAW Images
• Olympus OM-D E-M5 Review → Sample RAW Images

Links

• Wikipedia article
• libopenraw wiki: Olympus ORF
• ExifTool: Olympus Tags