All about ORF files
Olympus RAW camera data, maximum quality
ORF (Olympus RAW Format) is the proprietary RAW image format used by Olympus cameras. Like many other RAW formats, it is based on the TIFF container. It stores raw sensor data, leaving all post-processing options open.
Olympus introduced the ORF format back in 2000 with the Olympus E-10. Even following the sale of the camera division in 2020, cameras under the OM System brand name continue to use the ORF format.
Technical details of the ORF format:
The structure of ORF is similar to TIFF, but uses different signatures depending on the camera model. ORF files begin (magic) with MMOR, IIRO or IIRS. IFD 0 contains the main image, IFD 1 a 160 x 120 pixel preview. (libopenraw)
Last updated on March 15, 2026 by Sören Ramspeck with the experience of more than 128,397,753 converted files since 2013.
Convert, open and edit ORF files
Details about ORF files
- Software for opening ORF files
- Adobe Camera Raw
- Darktable
- RawTherapee
- Software for editing ORF files
- Adobe Photoshop
- Adobe Lightroom
- Darktable
- MIME-type for ORF
- image/x-olympus-orf
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