Epson Raw Image Format
Readableimage
This format is the RAW image format used in Epsom cameras. RAW format images contain all the data that is taken directly from the camera's image sensor before the software in the camera applies things like white balance, sharpening etc. Storing photographs in a camera's RAW format allows you to alter those settings after the photograph has been taken.
Identify it
| Extensions | .erf |
|---|---|
| MIME types | image/x-epson-erfimage/x-raw-epson |
| Signatures | 4d4d002a at byte 0 (Epson RAW Image Format) |
| PRONOM | fmt/641 |
| Wikidata | Q28205330 |
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Open it
- AbydosOpen source
- ExifToolOpen source
- ImageMagickOpen source
- LibRawOpen source
Convert it
| To | With | Fidelity | Command and losses |
|---|---|---|---|
| Portable Network Graphics | ImageMagick | Lossless | convert in.erf out.pngPixels kept; some metadata, colour profiles or layers may be dropped. |
| Tagged Image File Format | ImageMagick | Lossless | convert in.erf out.tifPixels kept; some metadata, colour profiles or layers may be dropped. |
| GIF 89a | ImageMagick | Lossy | convert in.erf out.gifReduced to 256 colours. |
| JPEG File Interchange Format 1.02 | ImageMagick | Lossy | convert in.erf out.jpgLossy compression. |
| WebP | ImageMagick | Lossy | convert in.erf out.webpLossy compression. |
Sources
From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.