How to view a .X3F file online
No app, no account, no upload.
Open your .X3F
Drag a .X3F file straight from your memory card onto the viewer, or choose it from your device. It's read right here, so even a 60 MB original opens without uploading.
View the photo and settings
We show the largest preview the camera saved, with shutter speed, aperture, ISO, lens, date, location and a histogram.
Save a JPG
Export the preview as JPG, PNG or WEBP to share it right away. Rotation from the camera is applied.
What is a .X3F file?
Everything worth knowing about Sigma Camera RAW picture file.
An .X3F file is a raw image format used by SIGMA cameras. It contains unprocessed data captured directly from the camera's sensor, preserving high levels of detail for post-processing. These files can be opened and edited using software such as Adobe Photoshop, Lightroom, darktable, and Zoner Photo Studio.
Programs that open .X3F files
- Windows
- SIGMA Photo Pro, Adobe Photoshop, PaintShop Pro, Adobe Photoshop Lightroom, FastPictureViewer Professional, Adobe DNG Converter
- macOS
- Adobe Photoshop, Google Picasa
- Linux
- darktable
| Developer | SIGMA |
|---|---|
| Category | Images |
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Frequently asked questions
Is my .X3F file uploaded?
No. The viewer reads your .X3F file. RAW files are big and personal, so they never leave your device.
Is this the real RAW image?
It's the full-size JPEG preview the camera stored inside the RAW file, which is what the camera displays. It has the camera's own colors and white balance. Developing the raw sensor data with your own settings is coming soon.
Why is the preview small for my camera?
Some older cameras (and Sigma, Kodak and Minolta models) only embed a small thumbnail. The panel tells you the preview size and how it compares to the sensor.
Where does the location come from?
From the GPS data your camera or phone saved in the file. If you share the photo, remember this data travels with the original RAW.
Can I convert RAW to JPG here?
Yes: open the file and use Save as JPG. You'll get the camera's preview in full quality. For edited exports with your own exposure and color, use a RAW editor until our developer arrives.
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