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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.
PFM at a glance
PFM
These formats persist in engineering, compression research, and conversion-tool contexts where simple sample storage or adjunct technical representation is useful.
Format comparison
| Feature | X3F | PFM |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
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| Created year | 2002 | 1995 |
| Inventor | Sigma (Foveon) | Paul Debevec |
| Status | proprietary | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
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| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Supported | Not supported |
| HDR support | Not supported | Supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use X3F
- Your source file is already in X3F.
- Preserve source expectations before exporting to PFM.
- X3F is commonly used in image workflows.
When to use PFM
- Your target workflow expects PFM.
- Improve delivery compatibility with PFM.
- PFM is commonly used in image workflows.
FAQs
Why convert X3F to PFM?
Convert to PFM when high-precision floating-point image data must survive for rendering, HDR processing, or technical analysis.
It is useful as a working format in graphics and research pipelines.
What changes when converting X3F to PFM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PFM removes camera raw data. Moving to PFM adds HDR content.
What should I review after converting X3F to PFM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.