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JPEG 2000 at a glance
JPEG 2000
JPX reflects the branch of JPEG 2000 that pushed beyond a simple still-image wrapper into more expressive composition and metadata scenarios for professional and institutional imaging.
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 | JPEG 2000 | X3F |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
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| Created year | 2004 | 2002 |
| Inventor | ISO/IEC (JPEG committee) | Sigma (Foveon) |
| Status | active | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use JPEG 2000
- Your source file is already in JPEG 2000.
- Preserve source expectations before exporting to X3F.
- JPEG 2000 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 JPEG 2000 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 JPEG 2000 to X3F?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to X3F removes animation support. Moving to X3F adds camera raw data.
What should I review after converting JPEG 2000 to X3F?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.