RAF is the RAW file format used by FujiFilm camera. It looks like a simple table with embedded JPEG some data and uncompressed CFA.
MIME type
image/x-fuji-raf
Organisation
Byte order is Motorola (Big Endian)
- 16 bytes string to identify the file (magic)
FUJIFILMCCD-RAW
- 4 bytes
0201
- 8 bytes
FF389501
- 32 bytes for the camera string, \0 terminated
- offset directory
- Version (4 bytes) for the directory
*
0100
*0159
- 20 bytes “unknown”
- Jpeg image offset (4 bytes)
- Jpeg Image length (4 bytes)
- CFA Header Offset (4 bytes)
- CFA Header Length (4 bytes)
- CFA Offset (4 bytes)
- CFA Length (4 bytes)
- rest unused
- Version (4 bytes) for the directory
*
- Jpeg image offset
- Exif JFIF with thumbnail + preview
- CFA Header offset - Big Endian
- 4 bytes: count of records
- Records, one after the other
- 2 bytes: tag ID
- 2 bytes: size of record (N)
- N bytes: data
- CFA Offset
- Uncompressed RAW
Compression
Recent X-series camera like X-Pro2, X-T3 add an optional compression.
LibRaw compressed file support
Links
- http://crousseau.free.fr/imgfmt_raw.htm (via Internet Archive)