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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.
HDR at a glance
HDR
HDR raster formats became important in rendering and lighting workflows before consumer-facing HDR delivery stories matured in mainstream media formats.
Format comparison
| Feature | X3F | HDR |
|---|---|---|
| File type | Image | Image |
| Extensions |
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| MIME type |
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| Created year | 2002 | 1989 |
| Inventor | Sigma (Foveon) | Greg Ward |
| 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 HDR.
- X3F is commonly used in image workflows.
When to use HDR
- Your target workflow expects HDR.
- Improve delivery compatibility with HDR.
- HDR is commonly used in image workflows.
FAQs
Why convert X3F to HDR?
Convert to HDR when you need scene-referred high-dynamic-range image data for rendering, environment lighting, or technical HDR processing.
It is useful for lighting assets and specialized imaging pipelines.
What changes when converting X3F to HDR?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to HDR removes camera raw data. Moving to HDR adds HDR content.
What should I review after converting X3F to HDR?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.