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ORA at a glance
ORA
OpenRaster emerged from the libre graphics community as a practical answer to the lack of a clean open interchange format for layered raster artwork.
MOS at a glance
MOS
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.
Format comparison
| Feature | ORA | MOS |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2006 | 2003 |
| Inventor | Libre Graphics community | Leaf (now Phase One) |
| Status | active | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | 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 ORA
- Your source file is already in ORA.
- Preserve source expectations before exporting to MOS.
- ORA is commonly used in image workflows.
When to use MOS
- Your target workflow expects MOS.
- Improve delivery compatibility with MOS.
- MOS is commonly used in image workflows.
FAQs
Why convert ORA to MOS?
Convert to MOS when maintaining compatibility with Leaf-originated capture files or preserving source material from medium-format studio workflows.
It is primarily an archival and editing format.
What changes when converting ORA to MOS?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to MOS removes layer support. Moving to MOS adds camera raw data.
What should I review after converting ORA to MOS?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.