X3F is Sigma's RAW format, used by their cameras built around the Foveon X3 sensor, which captures color information directly in RGB form using three stacked pixel sensors at each location rather than the Bayer filter array most other cameras use. When you need a lossless export rather than a compressed one — for archival masters, further editing, or print work — PNG is the better target than JPG, since it doesn't introduce any additional compression loss once the file has been demosaiced.
Converting X3F to PNG is the practical choice when a Sigma shoot needs to retain maximum quality through an archival or editing pipeline rather than a final, compressed delivery.
- Install Batchify Raw Image Converter on your Windows PC.
- Open the app and select Batch Mode for an entire shoot, or Individual Mode for a single X3F file.
- Drag your X3F files or folder into the app window, enabling recursive folder scanning if needed.
- Set the "From" format to X3F and the "To" format to PNG.
- Click Convert. Lossless PNG files are written to your output folder, fully offline.
- Native support for Sigma's X3F Foveon RAW format
- Lossless PNG output preserves full image detail
- Bulk-convert an entire shoot's worth of X3F files in one batch
- Runs fully offline, keeping unreleased shoots private
- Multi-core processing for fast handling of large batches
Why choose PNG instead of JPG for X3F exports?
PNG is lossless, making it the better choice when preserving maximum image detail for archiving or further editing matters more than minimizing file size.
What makes Sigma's Foveon sensor different?
The Foveon X3 sensor captures color directly in RGB form using three stacked pixel sensors at each location, rather than the Bayer filter array most other camera sensors use.
Can I convert an entire shoot of X3F files at once?
Yes, Batch Mode processes an entire folder of X3F files in one pass, including nested sub-folders if recursive scanning is enabled.
Ready to convert your RAW camera files offline, in bulk, with full privacy?