Image format

Fujifilm RAF

Fujifilm camera raw images, with compression variants and sensor interpretation specific to the model.

Explore the format

About Fujifilm RAF

Fujifilm Raw

RAF is Fujifilm’s raw capture format. It stores image data with capture information for subsequent development instead of fixing every rendering choice in a finished JPEG. Support must match the camera’s sensor and recording mode; knowing the RAF extension alone is not a full description of its internal image representation.

Fujifilm documents uncompressed, lossless-compressed and lossy-compressed RAW options where supported. Lossless and lossy modes are distinct, and applications must understand the particular compressed variant. The file extension does not declare which option was selected.

Use the raw original for repeated photographic development when exposure interpretation and colour decisions need to remain flexible. Export JPEG for an opaque delivery image or a suitable high-precision raster for further editing. Those exports bake in processing choices and cannot recreate the original sensor data, calibration or all vendor metadata.

Raw development interprets capture values using colour calibration, white balance and a tone curve; mosaiced data also needs demosaicing. A built-in preview is already rendered and can look different from a fresh raw development. More bit depth does not recover clipped exposure or establish a ready-to-display HDR image.

Key capabilities

Compression
Depends on variant
Transparency
No
Animation
No
Extensions
.raf
MIME type
image/x-fuji-raf · Unregistered application convention
Metadata
Capture metadata
Best for
Fujifilm raw development
Sensor data
Raw development required
Colour depth
Camera and recording mode

Fujifilm documents uncompressed, lossless-compressed and lossy-compressed RAW options where supported. Lossless and lossy modes are distinct, and applications must understand the particular compressed variant. The file extension does not declare which option was selected.

History of Fujifilm RAF

Raw formats evolve alongside camera sensors, recording modes and development software. These milestones connect this format family to the camera and processing workflows that use it.

  1. Fujifilm RAW

    A development original

    Fujifilm’s RAW workflow retains capture data for subsequent rendering. This distinguishes the original from a camera-generated JPEG and its already selected colour and tone.

  2. Lossless compression

    Reversible compressed variants

    Fujifilm adds documented lossless compression options on supported models and lists compatible processing software. The decoder must support compressed RAW rather than only uncompressed capture.

  3. Compressed RAW

    A different size trade-off

    The support documentation also distinguishes a lossy, non-reversible option. Raw format evolution therefore includes model-specific trade-offs rather than one universal RAF compression claim.

Fujifilm RAF compared

Different formats, different trade-offs. Choose for the image and the workflow.

DNG

Fujifilm RAF vs DNG

DNG provides a published container for camera raw data and calibration information. It can simplify supported raw interchange, but conversion does not guarantee that every proprietary maker note or processing feature will remain usable.

JPEG

Fujifilm RAF vs JPEG

JPEG makes a compact photographic delivery file, but ordinary JPEG discards detail and has no alpha. Keep the richer source for editing and use JPEG when the receiving workflow expects an opaque photo.

TIFF

Fujifilm RAF vs TIFF

TIFF provides tagged raster storage with multiple images and several sample types and compression schemes. It is a useful interchange choice for scanning and high-precision editing, but the receiving tool must support the particular TIFF variant.

PNG

Fujifilm RAF vs PNG

PNG preserves decoded pixels losslessly and can carry alpha. It is useful for transparent graphics and screenshots; it does not preserve editable document layers or camera sensor data, and photographic files can be large.

Fujifilm RAF FAQ

What does this format store?

RAF is Fujifilm’s raw capture format. It stores image data with capture information for subsequent development instead of fixing every rendering choice in a finished JPEG. Support must match the camera’s sensor and recording mode; knowing the RAF extension alone is not a full description of its internal image representation.

How does compression affect quality?

Fujifilm documents uncompressed, lossless-compressed and lossy-compressed RAW options where supported. Lossless and lossy modes are distinct, and applications must understand the particular compressed variant. The file extension does not declare which option was selected.

Is compressed RAF always lossless?

No. Fujifilm distinguishes lossless compression from non-reversible lossy compression. Check the recording option and model rather than assuming one result for every RAF.

What should I check before opening the file?

Check the exact camera model and recording mode in the processor’s support list. Raw support is model-specific, even when the extension is recognised. Viewing an embedded JPEG preview does not prove the sensor data has been decoded.

What changes when I export to another format?

Raw-to-image export develops the data: white balance, colour mapping and tone become part of the pixels. Grayscale, palette and SDR targets can discard additional information. Keep the original; converting a rendered image back into a raw container cannot reconstruct the capture.

When is this format useful?

Use the raw original for repeated photographic development when exposure interpretation and colour decisions need to remain flexible. Export JPEG for an opaque delivery image or a suitable high-precision raster for further editing. Those exports bake in processing choices and cannot recreate the original sensor data, calibration or all vendor metadata.

Sources