X3F is Sigma’s raw format from Foveon-sensor cameras.
X3F opens in Sigma Photo Pro and some raw editors.
Maximum dynamic range and editing latitude.
Recover highlights and shadows non-destructively.
Keep the untouched original alongside exports.
| ✔ Strengths | ✖ Limitations |
|---|---|
| Maximum editing latitude | No transparency support |
| Needs raw-capable software |
Remove the background from X3F images, upscale to 4K, or generate new visuals with SharkFoto AI.
X3F is Sigma’s raw format from Foveon-sensor cameras.
X3F opens in Sigma Photo Pro and some raw editors.
X3F is an unprocessed raw container, so no detail is discarded.
Use SharkFoto's free tools — upload your X3F file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — X3F doesn't store transparency; convert to PNG or WEBP if you need it.