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K25 at a glance
K25
Digital photography fragmented into many manufacturer-specific raw formats because camera makers optimized for their own sensors, metadata, and software ecosystems rather than for one shared public raw standard.
X3F at a glance
X3F
Sigma raw support is closely tied to the company's Foveon sensor story, giving X3F a reputation and workflow profile that differ from more mainstream Bayer-centric raw ecosystems.
Format comparison
| Feature | K25 | X3F |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2001 | 2002 |
| Inventor | Kodak | Sigma (Foveon) |
| Status | proprietary | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Supported | Supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use K25
- Your source file is already in K25.
- Preserve source expectations before exporting to X3F.
- K25 is commonly used in image workflows.
When to use X3F
- Your target workflow expects X3F.
- Improve delivery compatibility with X3F.
- X3F is commonly used in image workflows.
FAQs
Why convert K25 to X3F?
Convert to X3F when preserving Sigma camera originals or maintaining a workflow built around Foveon raw processing.
It is useful for archival retention and non-destructive editing of Sigma captures.
What changes when converting K25 to X3F?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting K25 to X3F?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.