RAF vs TIFF
A detailed comparison of Fujifilm RAW and TIFF Image — file size, quality, compatibility, and which format to choose for your workflow.
Fujifilm RAW
Raster & Vector ImagesRAF is the RAW image format used by Fujifilm cameras, containing unprocessed sensor data with Fujifilm color science.
About RAF filesTIFF Image
Raster & Vector ImagesTIFF is a flexible, high-quality image format widely used in publishing, printing, and professional photography. It supports multiple compression methods and color spaces including CMYK.
About TIFF filesStrengths Comparison
RAF Strengths
- Full 14-bit (most bodies) or 16-bit (GFX) sensor data.
- Film simulation recipe stored in metadata.
- X-Trans sensor produces distinctive moiré-free rendering.
- Supports every classic Fuji film-simulation look.
TIFF Strengths
- Lossless by default — no generation loss on successive edits and saves.
- Supports any bit depth (1 to 32 bits per channel), any color model, any number of channels.
- Extensible tag system means vendor-specific data survives alongside standard tags.
- Multi-page containers are perfect for scanned documents, faxes, and DICOM-like stacks.
- Industry-standard for archival, museums, scientific imaging, and high-end print prepress.
Limitations
RAF Limitations
- X-Trans demosaicing is the hardest raw problem to solve cleanly.
- Third-party tools rarely match Fuji's own rendering.
- Proprietary with no official spec.
- GFX RAF files are massive (150+ MB per shot).
TIFF Limitations
- File sizes are huge compared to JPEG/WebP/AVIF — often 10-30× larger.
- Not a web format — no browser displays TIFF natively.
- Ambiguous spec areas mean some TIFFs only open correctly in the tool that created them.
- Weak animation support — designed for still imagery.
Technical Specifications
| Specification | RAF | TIFF |
|---|---|---|
| MIME type | image/x-fuji-raf | image/tiff |
| Extension | .raf | — |
| Container | Fujifilm proprietary TIFF-like | — |
| Sensor arrays | X-Trans (APS-C), Bayer (GFX medium-format) | — |
| Bit depth | 14-bit (X-series); 16-bit (GFX) | — |
| Extensions | — | .tif, .tiff |
| Standard | — | TIFF 6.0 (1992); BigTIFF extension for 64-bit offsets |
| Max file size | — | 4 GB (TIFF); 2^64 bytes (BigTIFF) |
| Compression options | — | None, LZW, Deflate, JPEG, CCITT G3/G4, PackBits, JBIG |
Typical File Sizes
RAF
- 26 MP RAF (X-T4, X-T5) 40-55 MB
- 40 MP RAF (X-H2, X-T5 40MP) 60-80 MB
- 102 MP RAF (GFX 100 II) 150-220 MB
TIFF
- Scanned A4 page (300 dpi, B&W) 100-300 KB
- Scanned A4 page (600 dpi, color) 15-40 MB
- Print-quality magazine photo 30-150 MB
- Satellite GeoTIFF tile 50 MB - 5 GB
Ready to convert?
Convert between RAF and TIFF online, free, and without installing anything. Encrypted upload, automatic deletion after 2 hours.
Frequently Asked Questions
RAF (Fujifilm RAW) is an image format used to store raster graphics — a two-dimensional grid of pixels describing a picture. It is part of the raster & vector images family and designed around a specific trade-off between file size, visual fidelity, and feature support (transparency, colour depth, compression type). Photographers, web designers, and content creators choose RAF when its particular strengths match the publishing target.
TIFF (Tagged Image File Format) is a flexible raster image format developed by Aldus Corporation in 1986. It supports lossless compression, multiple pages, layers, and high color depths, making it the standard for professional printing and scanning.
Most desktop photo viewers (Windows Photos, macOS Preview, GIMP, Photoshop, Affinity Photo) open RAF natively. On mobile, iOS Photos and Google Photos display RAF in the gallery when supported by the OS. If the format is rare or new, convert to JPG or PNG first — both are universally readable — using our RAF to JPG or RAF to PNG converter.
TIFF files open in Adobe Photoshop, GIMP, Windows Photos, macOS Preview, and IrfanView. Multi-page TIFFs may require specialized viewers or Adobe Acrobat.
Upload the RAF to KaijuConverter and pick a target format (JPG, PNG, WebP, HEIC, TIFF, BMP, SVG, PDF). The conversion runs in the browser via ImageMagick and returns a download in seconds. No account or installation required; both input and output delete automatically within two hours.
It depends on the task. JPG is the smallest file size for photographs; PNG is lossless with transparency; RAF has its own niche that may favour colour depth, animation, or encoding efficiency over one or both of those. For the final web publish, test all three and measure file size plus visible quality on real content.