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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.
EXR at a glance
EXR
OpenEXR came from film-production needs at ILM and then evolved into an open industry format that spread across rendering, compositing, and broader high-end image pipelines.
Format comparison
| Feature | X3F | EXR |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
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| Created year | 2002 | 2003 |
| Inventor | Sigma (Foveon) | Industrial Light & Magic |
| Status | proprietary | active |
| 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 | 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 EXR.
- X3F is commonly used in image workflows.
When to use EXR
- Your target workflow expects EXR.
- Improve delivery compatibility with EXR.
- EXR is commonly used in image workflows.
FAQs
Why convert X3F to EXR?
Convert to EXR when the image needs high dynamic range, floating-point precision, render passes, or linear-light compositing.
It is ideal for CGI, VFX, and advanced HDR production pipelines.
What changes when converting X3F to EXR?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to EXR removes camera raw data. Moving to EXR adds HDR content.
What should I review after converting X3F to EXR?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.