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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.
MRW at a glance
MRW
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 | MRW |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2006 | 2001 |
| Inventor | Libre Graphics community | Minolta |
| 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 MRW.
- ORA is commonly used in image workflows.
When to use MRW
- Your target workflow expects MRW.
- Improve delivery compatibility with MRW.
- MRW is commonly used in image workflows.
FAQs
Why convert ORA to MRW?
Convert to MRW when preserving Minolta-origin camera raws or working with historical photo collections from that ecosystem.
It is useful for archive retention and legacy raw recovery.
What changes when converting ORA to MRW?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to MRW removes layer support. Moving to MRW adds camera raw data.
What should I review after converting ORA to MRW?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.