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Why convert X3F to FTS?
Fast
Your file is converted in under 30 seconds in our cloud.
Secure
Files are automatically deleted after 1 hour.
Quality preserved
Maximum quality preserved during conversion.
About the X3F format
RAW — Sigma X3F RAW
X3F is Sigma's proprietary RAW format used in cameras equipped with the Foveon X3 sensor. Unlike conventional Bayer sensors, the Foveon captures red, green, and blue data at every pixel location, producing unique color rendering and sharpness.
Common uses
- Sigma camera photography with Foveon sensor
- Studio and still-life photography
- Architecture and detail-oriented photography
- Color-critical professional workflows
About the FTS format
FTS — Flexible Image Transport System (FITS)
FITS (Flexible Image Transport System) is the standard format used in astronomy for storing scientific data, images, and tables. Developed by NASA and the IAU, it is the universal format for telescope observations, space mission data, and astronomical image archives.
Common uses
- Astronomical image and data storage
- Telescope and space mission image archives
- Scientific image analysis in astrophysics
- Converting telescope data to viewable formats
Related conversions
Other conversions available for X3F and FTS files
Frequently asked questions
Is the conversion free?
Yes, basic conversion is completely free. For large volumes, check out our paid plans.
What is the maximum file size?
Free accounts can convert files up to 25 MB. Pro accounts up to 100 MB.
How long are my files kept?
Files are automatically deleted after 1 hour on the free plan, 24 hours on Pro.
What formats are supported?
We support over 200 source and target formats. See our complete formats page.