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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.
PTX at a glance
PTX
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 | PTX |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2006 | 2005 |
| Inventor | Libre Graphics community | Pentax (now Ricoh) |
| 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 PTX.
- ORA is commonly used in image workflows.
When to use PTX
- Your target workflow expects PTX.
- Improve delivery compatibility with PTX.
- PTX is commonly used in image workflows.
FAQs
Why convert ORA to PTX?
Convert to PTX when preserving compatibility with an existing proprietary capture archive or working inside a specialist workflow that still expects it.
It is mainly an archival and migration format.
What changes when converting ORA to PTX?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PTX removes layer support. Moving to PTX adds camera raw data.
What should I review after converting ORA to PTX?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.