RAF Converter
RAF is Fujifilm's raw format. Most X-series bodies record through an X-Trans colour filter array rather than the Bayer pattern nearly everything else uses, so RAF needs a different demosaic to resolve correctly — one reason converting with software that knows the format matters more here than usual.
RAF at a glance
| Full name | Fujifilm RAW |
|---|---|
| Extension | .raf |
| MIME type | image/x-fujifilm-raf |
| Compression | Lossless |
| Transparency | No |
| Animation | No |
| Colours | 14-bit per channel |
| Browser support | None — RAW editors only |
| Typical use | Fujifilm X-series and GFX cameras (X-Trans sensor) |
| Introduced | 2004 |
Convert RAF to another format
RAF questions
How do I open a RAF file?
Fujifilm's free RAW FILE CONVERTER reads RAF, as do Lightroom, Camera Raw, Capture One and recent versions of darktable. Support quality varies more than with other raw formats because of the X-Trans sensor layout.
Why does RAF need different software from other raw formats?
Most cameras use a Bayer colour filter array; most Fujifilm X-series bodies use X-Trans, a different arrangement that needs its own demosaic algorithm. Software that treats a RAF as Bayer produces smeared fine detail and worm-like artefacts in foliage.
Do RAF files keep Fujifilm film simulations?
The simulation is recorded as a tag, not applied to the sensor data. Fujifilm's own software and some third-party editors can reapply Provia, Velvia, Acros and the rest; others show a neutral rendering and leave you to grade it yourself.
Which Fujifilm cameras produce RAF files?
The X-series bodies — X-T5, X-H2, X-Pro3, X-S20 and their predecessors — and the medium-format GFX range. The GFX sensors are Bayer rather than X-Trans, so those RAF files behave like conventional raw.