File format · RAW

.X3F — Sigma/Foveon RAW

Sigma/Foveon RAW. A RAW image format used by Sigma cameras.

.x3f
File extension
RAW
Type
R/W
ExifTool support (R/W/C)

What is a .x3f file?#

Sigma/Foveon RAW. A RAW image format used by Sigma cameras.

Made by: Sigma.

How to open and convert it#

Open & edit: Adobe Lightroom / Camera Raw, Capture One, DxO PhotoLab, darktable and RawTherapee (free), or the manufacturer's own free software. Windows and macOS preview most RAW formats natively after updates.

Convert: Adobe DNG Converter (free) turns proprietary RAW into DNG; any RAW editor exports JPEG or 16-bit TIFF.

See all Sigma cameras.

Read metadata: exiftool file.x3f — see the EXIF tag reference.

Other RAW formats#

.3fr.arq.arw.cr2.cr3.crm.cs1.czi.dcr.dng.erf.fff.gpr.iiq.k25.kdc.mef.mos.mrw.nef.nrw.pef.r3d.raf

Frequently asked questions#

What opens .x3f files?

Open & edit: Adobe Lightroom / Camera Raw, Capture One, DxO PhotoLab, darktable and RawTherapee (free), or the manufacturer's own free software. Windows and macOS preview most RAW formats natively after updates.

Convert: Adobe DNG Converter (free) turns proprietary RAW into DNG; any RAW editor exports JPEG or 16-bit TIFF.

See all Sigma cameras.

Is .x3f a RAW file?

Yes — it stores minimally processed sensor data from Sigma cameras.

Last updated October 03, 2026 · How we calculate · Sources